diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index 8336b174d4..51a4b464f0 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -906,6 +906,11 @@ paths:
           type: string
           required: false
           description: Repo name for filtering results.
+        - name: label_id
+          in: query
+          type: integer
+          required: false
+          description: The ID of label used to filter the result.
         - name: page
           in: query
           type: integer
@@ -1144,6 +1149,11 @@ paths:
           type: string
           required: true
           description: Relevant repository name.
+        - name: label_ids
+          in: query
+          type: string
+          required: false
+          description: A list of comma separated label IDs.
       tags:
         - Products
       responses:
diff --git a/make/photon/db/registry.sql b/make/photon/db/registry.sql
index 02e96d6637..111ca6232d 100644
--- a/make/photon/db/registry.sql
+++ b/make/photon/db/registry.sql
@@ -277,8 +277,9 @@ create table harbor_resource_label (
  label_id int NOT NULL,
 # the resource_id is the ID of project when the resource_type is p
 # the resource_id is the ID of repository when the resource_type is r
-# the resource_id is the name of image when the resource_type is i
- resource_id varchar(256) NOT NULL,
+ resource_id int,
+# the resource_name is the name of image when the resource_type is i
+ resource_name varchar(256),
 # 'p' for project
 # 'r' for repository
 # 'i' for image
diff --git a/make/photon/db/registry_sqlite.sql b/make/photon/db/registry_sqlite.sql
index 5d045edb08..82d0be64c3 100644
--- a/make/photon/db/registry_sqlite.sql
+++ b/make/photon/db/registry_sqlite.sql
@@ -267,9 +267,12 @@ create table harbor_resource_label (
 /*
  the resource_id is the ID of project when the resource_type is p
  the resource_id is the ID of repository when the resource_type is r
- the resource_id is the name of image when the resource_type is i
 */
- resource_id varchar(256) NOT NULL,
+ resource_id int,
+/*
+ the resource_name is the name of image when the resource_type is i
+*/
+ resource_name varchar(256),
 /*
  'p' for project
  'r' for repository
diff --git a/src/common/dao/repository.go b/src/common/dao/repository.go
index ee95334170..1fca529797 100644
--- a/src/common/dao/repository.go
+++ b/src/common/dao/repository.go
@@ -47,15 +47,6 @@ func GetRepositoryByName(name string) (*models.RepoRecord, error) {
 	return &r, err
 }
 
-// GetAllRepositories ...
-func GetAllRepositories() ([]*models.RepoRecord, error) {
-	o := GetOrmer()
-	var repos []*models.RepoRecord
-	_, err := o.QueryTable("repository").Limit(-1).
-		OrderBy("Name").All(&repos)
-	return repos, err
-}
-
 // DeleteRepository ...
 func DeleteRepository(name string) error {
 	o := GetOrmer()
@@ -94,18 +85,6 @@ func RepositoryExists(name string) bool {
 	return o.QueryTable("repository").Filter("name", name).Exist()
 }
 
-// GetRepositoryByProjectName ...
-func GetRepositoryByProjectName(name string) ([]*models.RepoRecord, error) {
-	sql := `select * from repository 
-		where project_id = (
-			select project_id from project
-			where name = ?
-		)`
-	repos := []*models.RepoRecord{}
-	_, err := GetOrmer().Raw(sql, name).QueryRows(&repos)
-	return repos, err
-}
-
 //GetTopRepos returns the most popular repositories whose project ID is
 // in projectIDs
 func GetTopRepos(projectIDs []int64, n int) ([]*models.RepoRecord, error) {
@@ -124,46 +103,78 @@ func GetTopRepos(projectIDs []int64, n int) ([]*models.RepoRecord, error) {
 }
 
 // GetTotalOfRepositories ...
-func GetTotalOfRepositories(name string) (int64, error) {
-	qs := GetOrmer().QueryTable(&models.RepoRecord{})
-	if len(name) != 0 {
-		qs = qs.Filter("Name__contains", name)
+func GetTotalOfRepositories(query ...*models.RepositoryQuery) (int64, error) {
+	sql, params := repositoryQueryConditions(query...)
+	sql = `select count(*) ` + sql
+	var total int64
+	if err := GetOrmer().Raw(sql, params).QueryRow(&total); err != nil {
+		return 0, err
 	}
-	return qs.Count()
+	return total, nil
 }
 
-// GetTotalOfRepositoriesByProject ...
-func GetTotalOfRepositoriesByProject(projectIDs []int64, name string) (int64, error) {
-	if len(projectIDs) == 0 {
-		return 0, nil
-	}
-
-	qs := GetOrmer().QueryTable(&models.RepoRecord{}).
-		Filter("project_id__in", projectIDs)
-
-	if len(name) != 0 {
-		qs = qs.Filter("Name__contains", name)
-	}
-
-	return qs.Count()
-}
-
-// GetRepositoriesByProject ...
-func GetRepositoriesByProject(projectID int64, name string,
-	limit, offset int64) ([]*models.RepoRecord, error) {
-
+// GetRepositories ...
+func GetRepositories(query ...*models.RepositoryQuery) ([]*models.RepoRecord, error) {
 	repositories := []*models.RepoRecord{}
 
-	qs := GetOrmer().QueryTable(&models.RepoRecord{}).
-		Filter("ProjectID", projectID)
-
-	if len(name) != 0 {
-		qs = qs.Filter("Name__contains", name)
+	sql, params := repositoryQueryConditions(query...)
+	sql = `select r.repository_id, r.name, r.project_id, r.description, r.pull_count, 
+	r.star_count, r.creation_time, r.update_time ` + sql + `order by r.name `
+	if len(query) > 0 && query[0] != nil {
+		page, size := query[0].Page, query[0].Size
+		if size > 0 {
+			sql += `limit ? `
+			params = append(params, size)
+			if page > 0 {
+				sql += `offset ? `
+				params = append(params, size*(page-1))
+			}
+		}
 	}
-	if limit > 0 {
-		qs = qs.Limit(limit).Offset(offset)
-	}
-	_, err := qs.All(&repositories)
 
-	return repositories, err
+	if _, err := GetOrmer().Raw(sql, params).QueryRows(&repositories); err != nil {
+		return nil, err
+	}
+	return repositories, nil
+}
+
+func repositoryQueryConditions(query ...*models.RepositoryQuery) (string, []interface{}) {
+	params := []interface{}{}
+	sql := `from repository r `
+	if len(query) == 0 || query[0] == nil {
+		return sql, params
+	}
+	q := query[0]
+	if len(q.ProjectName) > 0 {
+		sql += `join project p on r.project_id = p.project_id `
+	}
+
+	if q.LabelID > 0 {
+		sql += `join harbor_resource_label rl on r.repository_id = rl.resource_id 
+		and rl.resource_type = 'r' `
+	}
+	sql += `where 1=1 `
+
+	if len(q.Name) > 0 {
+		sql += `and r.name = ? `
+		params = append(params, q.Name)
+	}
+
+	if len(q.ProjectIDs) > 0 {
+		sql += fmt.Sprintf(`and r.project_id in ( %s ) `,
+			paramPlaceholder(len(q.ProjectIDs)))
+		params = append(params, q.ProjectIDs)
+	}
+
+	if len(q.ProjectName) > 0 {
+		sql += `and p.name = ? `
+		params = append(params, q.ProjectName)
+	}
+
+	if q.LabelID > 0 {
+		sql += `and rl.label_id = ? `
+		params = append(params, q.LabelID)
+	}
+
+	return sql, params
 }
diff --git a/src/common/dao/repository_test.go b/src/common/dao/repository_test.go
index 78379d85e2..ac293d6f8c 100644
--- a/src/common/dao/repository_test.go
+++ b/src/common/dao/repository_test.go
@@ -16,10 +16,11 @@ package dao
 
 import (
 	"fmt"
-	"strconv"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/vmware/harbor/src/common"
 	"github.com/vmware/harbor/src/common/models"
 )
 
@@ -32,61 +33,93 @@ var (
 	}
 )
 
-func TestGetRepositoryByProjectName(t *testing.T) {
-	if err := addRepository(repository); err != nil {
-		t.Fatalf("failed to add repository %s: %v", name, err)
-	}
-	defer func() {
-		if err := deleteRepository(name); err != nil {
-			t.Fatalf("failed to delete repository %s: %v", name, err)
-		}
-	}()
+func TestGetTotalOfRepositories(t *testing.T) {
+	total, err := GetTotalOfRepositories()
+	require.Nil(t, err)
 
-	repositories, err := GetRepositoryByProjectName(project)
-	if err != nil {
-		t.Fatalf("failed to get repositories of project %s: %v",
-			project, err)
-	}
+	err = addRepository(repository)
+	require.Nil(t, err)
+	defer deleteRepository(name)
 
-	if len(repositories) == 0 {
-		t.Fatal("unexpected length of repositories: 0, at least 1")
-	}
+	n, err := GetTotalOfRepositories()
+	require.Nil(t, err)
+	assert.Equal(t, total+1, n)
+}
 
-	exist := false
-	for _, repo := range repositories {
-		if repo.Name == name {
-			exist = true
+func TestGetRepositories(t *testing.T) {
+	// no query
+	repositories, err := GetRepositories()
+	require.Nil(t, err)
+	n := len(repositories)
+
+	err = addRepository(repository)
+	require.Nil(t, err)
+	defer deleteRepository(name)
+
+	repositories, err = GetRepositories()
+	require.Nil(t, err)
+	assert.Equal(t, n+1, len(repositories))
+
+	// query by name
+	repositories, err = GetRepositories(&models.RepositoryQuery{
+		Name: name,
+	})
+	require.Nil(t, err)
+	require.Equal(t, 1, len(repositories))
+	assert.Equal(t, name, repositories[0].Name)
+
+	// query by project name
+	repositories, err = GetRepositories(&models.RepositoryQuery{
+		ProjectName: project,
+	})
+	require.Nil(t, err)
+	found := false
+	for _, repository := range repositories {
+		if repository.Name == name {
+			found = true
 			break
 		}
 	}
-	if !exist {
-		t.Errorf("there is no repository whose name is %s", name)
-	}
-}
+	assert.True(t, found)
 
-func TestGetTotalOfRepositories(t *testing.T) {
-	total, err := GetTotalOfRepositories("")
-	if err != nil {
-		t.Fatalf("failed to get total of repositoreis: %v", err)
-	}
-
-	if err := addRepository(repository); err != nil {
-		t.Fatalf("failed to add repository %s: %v", name, err)
-	}
-	defer func() {
-		if err := deleteRepository(name); err != nil {
-			t.Fatalf("failed to delete repository %s: %v", name, err)
+	// query by project ID
+	repositories, err = GetRepositories(&models.RepositoryQuery{
+		ProjectIDs: []int64{1},
+	})
+	require.Nil(t, err)
+	found = false
+	for _, repository := range repositories {
+		if repository.Name == name {
+			found = true
+			break
 		}
-	}()
-
-	n, err := GetTotalOfRepositories("")
-	if err != nil {
-		t.Fatalf("failed to get total of repositoreis: %v", err)
 	}
+	assert.True(t, found)
 
-	if n != total+1 {
-		t.Errorf("unexpected total: %d != %d", n, total+1)
-	}
+	// query by label ID
+	labelID, err := AddLabel(&models.Label{
+		Name: "label_for_test",
+	})
+	require.Nil(t, err)
+	defer DeleteLabel(labelID)
+
+	r, err := GetRepositoryByName(name)
+	require.Nil(t, err)
+
+	rlID, err := AddResourceLabel(&models.ResourceLabel{
+		LabelID:      labelID,
+		ResourceID:   r.RepositoryID,
+		ResourceType: common.ResourceTypeRepository,
+	})
+	require.Nil(t, err)
+	defer DeleteResourceLabel(rlID)
+
+	repositories, err = GetRepositories(&models.RepositoryQuery{
+		LabelID: labelID,
+	})
+	require.Nil(t, err)
+	require.Equal(t, 1, len(repositories))
+	assert.Equal(t, name, repositories[0].Name)
 }
 
 func TestGetTopRepos(t *testing.T) {
@@ -149,112 +182,6 @@ func TestGetTopRepos(t *testing.T) {
 	require.Equal(topRepos[0].Name, repository3.Name)
 }
 
-func TestGetTotalOfRepositoriesByProject(t *testing.T) {
-	var projectID int64 = 1
-	repoName := "library/total_count"
-
-	total, err := GetTotalOfRepositoriesByProject([]int64{projectID}, repoName)
-	if err != nil {
-		t.Errorf("failed to get total of repositoreis of project %d: %v", projectID, err)
-		return
-	}
-
-	if err := addRepository(&models.RepoRecord{
-		Name:      repoName,
-		ProjectID: projectID,
-	}); err != nil {
-		t.Errorf("failed to add repository %s: %v", repoName, err)
-		return
-	}
-	defer func() {
-		if err := deleteRepository(repoName); err != nil {
-			t.Errorf("failed to delete repository %s: %v", name, err)
-			return
-		}
-	}()
-
-	n, err := GetTotalOfRepositoriesByProject([]int64{projectID}, repoName)
-	if err != nil {
-		t.Errorf("failed to get total of repositoreis of project %d: %v", projectID, err)
-		return
-	}
-
-	if n != total+1 {
-		t.Errorf("unexpected total: %d != %d", n, total+1)
-	}
-}
-
-func TestGetRepositoriesByProject(t *testing.T) {
-	var projectID int64 = 1
-	repoName := "library/repository"
-
-	if err := addRepository(&models.RepoRecord{
-		Name:      repoName,
-		ProjectID: projectID,
-	}); err != nil {
-		t.Errorf("failed to add repository %s: %v", repoName, err)
-		return
-	}
-	defer func() {
-		if err := deleteRepository(repoName); err != nil {
-			t.Errorf("failed to delete repository %s: %v", name, err)
-			return
-		}
-	}()
-
-	repositories, err := GetRepositoriesByProject(projectID, repoName, 10, 0)
-	if err != nil {
-		t.Errorf("failed to get repositoreis of project %d: %v", projectID, err)
-		return
-	}
-
-	t.Log(repositories)
-
-	for _, repository := range repositories {
-		if repository.Name == repoName {
-			return
-		}
-	}
-
-	t.Errorf("repository %s not found", repoName)
-}
-
-func TestGetAllRepositories(t *testing.T) {
-	require := require.New(t)
-
-	var repos []*models.RepoRecord
-	repos, err := GetAllRepositories()
-	require.NoError(err)
-	allBefore := len(repos)
-
-	project1 := models.Project{
-		OwnerID: 1,
-		Name:    "projectRepo",
-	}
-	var err2 error
-	project1.ProjectID, err2 = AddProject(project1)
-	require.NoError(err2)
-
-	for i := 0; i < 1200; i++ {
-		end := strconv.Itoa(i)
-		repoRecord := models.RepoRecord{
-			Name:      "test" + end,
-			ProjectID: project1.ProjectID,
-		}
-		err := AddRepository(repoRecord)
-		require.NoError(err)
-	}
-
-	repos, err = GetAllRepositories()
-	require.NoError(err)
-	allAfter := len(repos)
-
-	require.Equal(allAfter, allBefore+1200)
-
-	err = clearRepositoryData()
-	require.NoError(err)
-}
-
 func addRepository(repository *models.RepoRecord) error {
 	return AddRepository(*repository)
 }
diff --git a/src/common/dao/resource_label.go b/src/common/dao/resource_label.go
index f89bb27a56..56b17916b7 100644
--- a/src/common/dao/resource_label.go
+++ b/src/common/dao/resource_label.go
@@ -29,14 +29,26 @@ func AddResourceLabel(rl *models.ResourceLabel) (int64, error) {
 	return GetOrmer().Insert(rl)
 }
 
-// GetResourceLabel specified by ID
-func GetResourceLabel(rType, rID string, labelID int64) (*models.ResourceLabel, error) {
+// GetResourceLabel specified by resource ID or name
+// Get the ResourceLabel by ResourceID if rIDOrName is int
+// Get the ResourceLabel by ResourceName if rIDOrName is string
+func GetResourceLabel(rType string, rIDOrName interface{}, labelID int64) (*models.ResourceLabel, error) {
 	rl := &models.ResourceLabel{
 		ResourceType: rType,
-		ResourceID:   rID,
 		LabelID:      labelID,
 	}
-	if err := GetOrmer().Read(rl, "ResourceType", "ResourceID", "LabelID"); err != nil {
+
+	var err error
+	id, ok := rIDOrName.(int64)
+	if ok {
+		rl.ResourceID = id
+		err = GetOrmer().Read(rl, "ResourceType", "ResourceID", "LabelID")
+	} else {
+		rl.ResourceName = rIDOrName.(string)
+		err = GetOrmer().Read(rl, "ResourceType", "ResourceName", "LabelID")
+	}
+
+	if err != nil {
 		if err == orm.ErrNoRows {
 			return nil, nil
 		}
@@ -47,13 +59,20 @@ func GetResourceLabel(rType, rID string, labelID int64) (*models.ResourceLabel,
 }
 
 // GetLabelsOfResource returns the label list of the resource
-func GetLabelsOfResource(rType, rID string) ([]*models.Label, error) {
+// Get the labels by ResourceID if rIDOrName is int, or get the labels by ResourceName
+func GetLabelsOfResource(rType string, rIDOrName interface{}) ([]*models.Label, error) {
 	sql := `select l.id, l.name, l.description, l.color, l.scope, l.project_id, l.creation_time, l.update_time
 				from harbor_resource_label rl
 				join harbor_label l on rl.label_id=l.id
-				where rl.resource_type = ? and rl.resource_id = ?`
+				where rl.resource_type = ? and`
+	if _, ok := rIDOrName.(int64); ok {
+		sql += ` rl.resource_id = ?`
+	} else {
+		sql += ` rl.resource_name = ?`
+	}
+
 	labels := []*models.Label{}
-	_, err := GetOrmer().Raw(sql, rType, rID).QueryRows(&labels)
+	_, err := GetOrmer().Raw(sql, rType, rIDOrName).QueryRows(&labels)
 	return labels, err
 }
 
@@ -65,10 +84,39 @@ func DeleteResourceLabel(id int64) error {
 	return err
 }
 
-// DeleteLabelsOfResource removes all labels of resource specified by rType and rID
-func DeleteLabelsOfResource(rType, rID string) error {
-	_, err := GetOrmer().QueryTable(&models.ResourceLabel{}).
-		Filter("ResourceType", rType).
-		Filter("ResourceID", rID).Delete()
+// DeleteLabelsOfResource removes all labels of the resource
+func DeleteLabelsOfResource(rType string, rIDOrName interface{}) error {
+	qs := GetOrmer().QueryTable(&models.ResourceLabel{}).
+		Filter("ResourceType", rType)
+	if _, ok := rIDOrName.(int64); ok {
+		qs = qs.Filter("ResourceID", rIDOrName)
+	} else {
+		qs = qs.Filter("ResourceName", rIDOrName)
+	}
+	_, err := qs.Delete()
 	return err
 }
+
+// ListResourceLabels lists ResourceLabel according to the query conditions
+func ListResourceLabels(query ...*models.ResourceLabelQuery) ([]*models.ResourceLabel, error) {
+	qs := GetOrmer().QueryTable(&models.ResourceLabel{})
+	if len(query) > 0 {
+		q := query[0]
+		if q.LabelID > 0 {
+			qs = qs.Filter("LabelID", q.LabelID)
+		}
+		if len(q.ResourceType) > 0 {
+			qs = qs.Filter("ResourceType", q.ResourceType)
+		}
+		if q.ResourceID > 0 {
+			qs = qs.Filter("ResourceID", q.ResourceID)
+		}
+		if len(q.ResourceName) > 0 {
+			qs = qs.Filter("ResourceName", q.ResourceName)
+		}
+	}
+
+	rls := []*models.ResourceLabel{}
+	_, err := qs.All(&rls)
+	return rls, err
+}
diff --git a/src/common/dao/resource_label_test.go b/src/common/dao/resource_label_test.go
index 33259e1fd5..572bec8b5d 100644
--- a/src/common/dao/resource_label_test.go
+++ b/src/common/dao/resource_label_test.go
@@ -32,7 +32,7 @@ func TestMethodsOfResourceLabel(t *testing.T) {
 	require.Nil(t, err)
 	defer DeleteLabel(labelID)
 
-	resourceID := "1"
+	var resourceID int64 = 1
 	resourceType := common.ResourceTypeRepository
 
 	// add
@@ -56,6 +56,16 @@ func TestMethodsOfResourceLabel(t *testing.T) {
 	require.Equal(t, 1, len(labels))
 	assert.Equal(t, id, r.ID)
 
+	// list
+	rls, err := ListResourceLabels(&models.ResourceLabelQuery{
+		LabelID:      labelID,
+		ResourceType: resourceType,
+		ResourceID:   resourceID,
+	})
+	require.Nil(t, err)
+	require.Equal(t, 1, len(rls))
+	assert.Equal(t, id, rls[0].ID)
+
 	// delete
 	err = DeleteResourceLabel(id)
 	require.Nil(t, err)
diff --git a/src/common/models/label.go b/src/common/models/label.go
index 6d949b81ce..f725848321 100644
--- a/src/common/models/label.go
+++ b/src/common/models/label.go
@@ -69,7 +69,8 @@ func (l *Label) Valid(v *validation.Validation) {
 type ResourceLabel struct {
 	ID           int64     `orm:"pk;auto;column(id)"`
 	LabelID      int64     `orm:"column(label_id)"`
-	ResourceID   string    `orm:"column(resource_id)"`
+	ResourceID   int64     `orm:"column(resource_id)"`
+	ResourceName string    `orm:"column(resource_name)"`
 	ResourceType string    `orm:"column(resource_type)"`
 	CreationTime time.Time `orm:"column(creation_time)"`
 	UpdateTime   time.Time `orm:"column(update_time)"`
@@ -79,3 +80,11 @@ type ResourceLabel struct {
 func (r *ResourceLabel) TableName() string {
 	return "harbor_resource_label"
 }
+
+// ResourceLabelQuery : query parameters for the mapping relationships of resource and label
+type ResourceLabelQuery struct {
+	LabelID      int64
+	ResourceID   int64
+	ResourceName string
+	ResourceType string
+}
diff --git a/src/common/models/project.go b/src/common/models/project.go
index f916f3c623..5b8fd4f6a4 100644
--- a/src/common/models/project.go
+++ b/src/common/models/project.go
@@ -33,7 +33,7 @@ type Project struct {
 	OwnerName    string            `orm:"-" json:"owner_name"`
 	Togglable    bool              `orm:"-" json:"togglable"`
 	Role         int               `orm:"-" json:"current_user_role_id"`
-	RepoCount    int               `orm:"-" json:"repo_count"`
+	RepoCount    int64             `orm:"-" json:"repo_count"`
 	Metadata     map[string]string `orm:"-" json:"metadata"`
 }
 
diff --git a/src/common/models/repo.go b/src/common/models/repo.go
index 5d5984ae76..9d1e36aebe 100644
--- a/src/common/models/repo.go
+++ b/src/common/models/repo.go
@@ -37,3 +37,12 @@ type RepoRecord struct {
 func (rp *RepoRecord) TableName() string {
 	return RepoTable
 }
+
+// RepositoryQuery : query parameters for repository
+type RepositoryQuery struct {
+	Name        string
+	ProjectIDs  []int64
+	ProjectName string
+	LabelID     int64
+	Pagination
+}
diff --git a/src/replication/registry/harbor_adaptor.go b/src/replication/registry/harbor_adaptor.go
index e28622f933..184689ca71 100644
--- a/src/replication/registry/harbor_adaptor.go
+++ b/src/replication/registry/harbor_adaptor.go
@@ -2,6 +2,7 @@ package registry
 
 import (
 	"github.com/vmware/harbor/src/common/dao"
+	common_models "github.com/vmware/harbor/src/common/models"
 	"github.com/vmware/harbor/src/common/utils/log"
 	"github.com/vmware/harbor/src/replication"
 	"github.com/vmware/harbor/src/replication/models"
@@ -30,7 +31,9 @@ func (ha *HarborAdaptor) GetNamespace(name string) models.Namespace {
 
 //GetRepositories is used to get all the repositories under the specified namespace
 func (ha *HarborAdaptor) GetRepositories(namespace string) []models.Repository {
-	repos, err := dao.GetRepositoryByProjectName(namespace)
+	repos, err := dao.GetRepositories(&common_models.RepositoryQuery{
+		ProjectName: namespace,
+	})
 	if err != nil {
 		log.Errorf("failed to get repositories under namespace %s: %v", namespace, err)
 		return nil
diff --git a/src/ui/api/project.go b/src/ui/api/project.go
index 3c34bb2c21..a292ca9fec 100644
--- a/src/ui/api/project.go
+++ b/src/ui/api/project.go
@@ -270,7 +270,9 @@ func (p *ProjectAPI) Deletable() {
 }
 
 func deletable(projectID int64) (*deletableResp, error) {
-	count, err := dao.GetTotalOfRepositoriesByProject([]int64{projectID}, "")
+	count, err := dao.GetTotalOfRepositories(&models.RepositoryQuery{
+		ProjectIDs: []int64{projectID},
+	})
 	if err != nil {
 		return nil, err
 	}
@@ -395,13 +397,15 @@ func (p *ProjectAPI) populateProperties(project *models.Project) {
 		}
 	}
 
-	repos, err := dao.GetRepositoryByProjectName(project.Name)
+	total, err := dao.GetTotalOfRepositories(&models.RepositoryQuery{
+		ProjectIDs: []int64{project.ProjectID},
+	})
 	if err != nil {
-		log.Errorf("failed to get repositories of project %s: %v", project.Name, err)
+		log.Errorf("failed to get total of repositories of project %d: %v", project.ProjectID, err)
 		p.CustomAbort(http.StatusInternalServerError, "")
 	}
 
-	project.RepoCount = len(repos)
+	project.RepoCount = total
 }
 
 // Put ...
diff --git a/src/ui/api/repository.go b/src/ui/api/repository.go
index b57786ff65..cff3f94448 100644
--- a/src/ui/api/repository.go
+++ b/src/ui/api/repository.go
@@ -96,6 +96,12 @@ func (ra *RepositoryAPI) Get() {
 		return
 	}
 
+	labelID, err := ra.GetInt64("label_id", 0)
+	if err != nil {
+		ra.HandleBadRequest(fmt.Sprintf("invalid label_id: %s", ra.GetString("label_id")))
+		return
+	}
+
 	exist, err := ra.ProjectMgr.Exists(projectID)
 	if err != nil {
 		ra.ParseAndHandleError(fmt.Sprintf("failed to check the existence of project %d",
@@ -117,33 +123,33 @@ func (ra *RepositoryAPI) Get() {
 		return
 	}
 
-	keyword := ra.GetString("q")
+	query := &models.RepositoryQuery{
+		ProjectIDs: []int64{projectID},
+		Name:       ra.GetString("q"),
+		LabelID:    labelID,
+	}
+	query.Page, query.Size = ra.GetPaginationParams()
 
-	total, err := dao.GetTotalOfRepositoriesByProject(
-		[]int64{projectID}, keyword)
+	total, err := dao.GetTotalOfRepositories(query)
 	if err != nil {
 		ra.HandleInternalServerError(fmt.Sprintf("failed to get total of repositories of project %d: %v",
 			projectID, err))
 		return
 	}
 
-	page, pageSize := ra.GetPaginationParams()
-
-	repositories, err := getRepositories(projectID,
-		keyword, pageSize, pageSize*(page-1))
+	repositories, err := getRepositories(query)
 	if err != nil {
 		ra.HandleInternalServerError(fmt.Sprintf("failed to get repository: %v", err))
 		return
 	}
 
-	ra.SetPaginationHeader(total, page, pageSize)
+	ra.SetPaginationHeader(total, query.Page, query.Size)
 	ra.Data["json"] = repositories
 	ra.ServeJSON()
 }
 
-func getRepositories(projectID int64, keyword string,
-	limit, offset int64) ([]*repoResp, error) {
-	repositories, err := dao.GetRepositoriesByProject(projectID, keyword, limit, offset)
+func getRepositories(query *models.RepositoryQuery) ([]*repoResp, error) {
+	repositories, err := dao.GetRepositories(query)
 	if err != nil {
 		return nil, err
 	}
@@ -171,8 +177,7 @@ func assembleRepos(repositories []*models.RepoRecord) ([]*repoResp, error) {
 		}
 		repo.TagsCount = int64(len(tags))
 
-		labels, err := dao.GetLabelsOfResource(common.ResourceTypeRepository,
-			strconv.FormatInt(repository.RepositoryID, 10))
+		labels, err := dao.GetLabelsOfResource(common.ResourceTypeRepository, repository.RepositoryID)
 		if err != nil {
 			log.Errorf("failed to get labels of repository %s: %v", repository.Name, err)
 		} else {
@@ -385,6 +390,11 @@ func (ra *RepositoryAPI) GetTag() {
 // GetTags returns tags of a repository
 func (ra *RepositoryAPI) GetTags() {
 	repoName := ra.GetString(":splat")
+	labelID, err := ra.GetInt64("label_id", 0)
+	if err != nil {
+		ra.HandleBadRequest(fmt.Sprintf("invalid label_id: %s", ra.GetString("label_id")))
+		return
+	}
 
 	projectName, _ := utils.ParseRepository(repoName)
 	exist, err := ra.ProjectMgr.Exists(projectName)
@@ -420,7 +430,31 @@ func (ra *RepositoryAPI) GetTags() {
 		return
 	}
 
-	ra.Data["json"] = assembleTags(client, repoName, tags, ra.SecurityCtx.GetUsername())
+	// filter tags by label ID
+	if labelID > 0 {
+		rls, err := dao.ListResourceLabels(&models.ResourceLabelQuery{
+			LabelID:      labelID,
+			ResourceType: common.ResourceTypeImage,
+		})
+		if err != nil {
+			ra.HandleInternalServerError(fmt.Sprintf("failed to list resource labels: %v", err))
+			return
+		}
+		labeledTags := map[string]struct{}{}
+		for _, rl := range rls {
+			labeledTags[strings.Split(rl.ResourceName, ":")[1]] = struct{}{}
+		}
+		ts := []string{}
+		for _, tag := range tags {
+			if _, ok := labeledTags[tag]; ok {
+				ts = append(ts, tag)
+			}
+		}
+		tags = ts
+	}
+
+	ra.Data["json"] = assembleTags(client, repoName, tags,
+		ra.SecurityCtx.GetUsername())
 	ra.ServeJSON()
 }
 
@@ -443,6 +477,15 @@ func assembleTags(client *registry.Repository, repository string,
 	for _, t := range tags {
 		item := &tagResp{}
 
+		// labels
+		image := fmt.Sprintf("%s:%s", repository, t)
+		labels, err := dao.GetLabelsOfResource(common.ResourceTypeImage, image)
+		if err != nil {
+			log.Errorf("failed to get labels of image %s: %v", image, err)
+		} else {
+			item.Labels = labels
+		}
+
 		// the detail information of tag
 		tagDetail, err := getTagDetail(client, t)
 		if err != nil {
@@ -468,15 +511,6 @@ func assembleTags(client *registry.Repository, repository string,
 			}
 		}
 
-		// labels
-		image := fmt.Sprintf("%s:%s", repository, t)
-		labels, err := dao.GetLabelsOfResource(common.ResourceTypeImage, image)
-		if err != nil {
-			log.Errorf("failed to get labels of image %s: %v", image, err)
-		} else {
-			item.Labels = labels
-		}
-
 		result = append(result, item)
 	}
 
diff --git a/src/ui/api/repository_label.go b/src/ui/api/repository_label.go
index 95e92cdfc3..756c78d9db 100644
--- a/src/ui/api/repository_label.go
+++ b/src/ui/api/repository_label.go
@@ -144,24 +144,20 @@ func (r *RepositoryLabelAPI) AddToImage() {
 	rl := &models.ResourceLabel{
 		LabelID:      r.label.ID,
 		ResourceType: common.ResourceTypeImage,
-		ResourceID:   fmt.Sprintf("%s:%s", r.repository.Name, r.tag),
+		ResourceName: fmt.Sprintf("%s:%s", r.repository.Name, r.tag),
 	}
 	r.addLabel(rl)
 }
 
 // RemoveFromImage removes the label from an image
 func (r *RepositoryLabelAPI) RemoveFromImage() {
-	rl := &models.ResourceLabel{
-		LabelID:      r.label.ID,
-		ResourceType: common.ResourceTypeImage,
-		ResourceID:   fmt.Sprintf("%s:%s", r.repository.Name, r.tag),
-	}
-	r.removeLabel(rl)
+	r.removeLabel(common.ResourceTypeImage,
+		fmt.Sprintf("%s:%s", r.repository.Name, r.tag), r.label.ID)
 }
 
 // GetOfRepository returns labels of a repository
 func (r *RepositoryLabelAPI) GetOfRepository() {
-	r.getLabels(common.ResourceTypeRepository, strconv.FormatInt(r.repository.RepositoryID, 10))
+	r.getLabels(common.ResourceTypeRepository, r.repository.RepositoryID)
 }
 
 // AddToRepository adds the label to a repository
@@ -169,26 +165,21 @@ func (r *RepositoryLabelAPI) AddToRepository() {
 	rl := &models.ResourceLabel{
 		LabelID:      r.label.ID,
 		ResourceType: common.ResourceTypeRepository,
-		ResourceID:   strconv.FormatInt(r.repository.RepositoryID, 10),
+		ResourceID:   r.repository.RepositoryID,
 	}
 	r.addLabel(rl)
 }
 
 // RemoveFromRepository removes the label from a repository
 func (r *RepositoryLabelAPI) RemoveFromRepository() {
-	rl := &models.ResourceLabel{
-		LabelID:      r.label.ID,
-		ResourceType: common.ResourceTypeRepository,
-		ResourceID:   strconv.FormatInt(r.repository.RepositoryID, 10),
-	}
-	r.removeLabel(rl)
+	r.removeLabel(common.ResourceTypeRepository, r.repository.RepositoryID, r.label.ID)
 }
 
-func (r *RepositoryLabelAPI) getLabels(rType, rID string) {
-	labels, err := dao.GetLabelsOfResource(rType, rID)
+func (r *RepositoryLabelAPI) getLabels(rType string, rIDOrName interface{}) {
+	labels, err := dao.GetLabelsOfResource(rType, rIDOrName)
 	if err != nil {
-		r.HandleInternalServerError(fmt.Sprintf("failed to get labels of resource %s %s: %v",
-			rType, rID, err))
+		r.HandleInternalServerError(fmt.Sprintf("failed to get labels of resource %s %v: %v",
+			rType, rIDOrName, err))
 		return
 	}
 	r.Data["json"] = labels
@@ -196,10 +187,16 @@ func (r *RepositoryLabelAPI) getLabels(rType, rID string) {
 }
 
 func (r *RepositoryLabelAPI) addLabel(rl *models.ResourceLabel) {
-	rlabel, err := dao.GetResourceLabel(rl.ResourceType, rl.ResourceID, rl.LabelID)
+	var rIDOrName interface{}
+	if rl.ResourceID != 0 {
+		rIDOrName = rl.ResourceID
+	} else {
+		rIDOrName = rl.ResourceName
+	}
+	rlabel, err := dao.GetResourceLabel(rl.ResourceType, rIDOrName, rl.LabelID)
 	if err != nil {
-		r.HandleInternalServerError(fmt.Sprintf("failed to check the existence of label %d for resource %s %s: %v",
-			rl.LabelID, rl.ResourceType, rl.ResourceID, err))
+		r.HandleInternalServerError(fmt.Sprintf("failed to check the existence of label %d for resource %s %v: %v",
+			rl.LabelID, rl.ResourceType, rIDOrName, err))
 		return
 	}
 
@@ -208,8 +205,8 @@ func (r *RepositoryLabelAPI) addLabel(rl *models.ResourceLabel) {
 		return
 	}
 	if _, err := dao.AddResourceLabel(rl); err != nil {
-		r.HandleInternalServerError(fmt.Sprintf("failed to add label %d to resource %s %s: %v",
-			rl.LabelID, rl.ResourceType, rl.ResourceID, err))
+		r.HandleInternalServerError(fmt.Sprintf("failed to add label %d to resource %s %v: %v",
+			rl.LabelID, rl.ResourceType, rIDOrName, err))
 		return
 	}
 
@@ -217,22 +214,22 @@ func (r *RepositoryLabelAPI) addLabel(rl *models.ResourceLabel) {
 	r.Redirect(http.StatusOK, strconv.FormatInt(rl.LabelID, 10))
 }
 
-func (r *RepositoryLabelAPI) removeLabel(rl *models.ResourceLabel) {
-	rlabel, err := dao.GetResourceLabel(rl.ResourceType, rl.ResourceID, rl.LabelID)
+func (r *RepositoryLabelAPI) removeLabel(rType string, rIDOrName interface{}, labelID int64) {
+	rl, err := dao.GetResourceLabel(rType, rIDOrName, labelID)
 	if err != nil {
-		r.HandleInternalServerError(fmt.Sprintf("failed to check the existence of label %d for resource %s %s: %v",
-			rl.LabelID, rl.ResourceType, rl.ResourceID, err))
+		r.HandleInternalServerError(fmt.Sprintf("failed to check the existence of label %d for resource %s %v: %v",
+			labelID, rType, rIDOrName, err))
 		return
 	}
 
-	if rlabel == nil {
+	if rl == nil {
 		r.HandleNotFound(fmt.Sprintf("label %d of resource %s %s not found",
-			rl.LabelID, rl.ResourceType, rl.ResourceID))
+			labelID, rType, rIDOrName))
 		return
 	}
-	if err = dao.DeleteResourceLabel(rlabel.ID); err != nil {
+	if err = dao.DeleteResourceLabel(rl.ID); err != nil {
 		r.HandleInternalServerError(fmt.Sprintf("failed to delete resource label record %d: %v",
-			rlabel.ID, err))
+			rl.ID, err))
 		return
 	}
 }
diff --git a/src/ui/api/repository_test.go b/src/ui/api/repository_test.go
index 45d11db979..c0efc2c6cf 100644
--- a/src/ui/api/repository_test.go
+++ b/src/ui/api/repository_test.go
@@ -27,7 +27,7 @@ func TestGetRepos(t *testing.T) {
 	assert := assert.New(t)
 	apiTest := newHarborAPI()
 	projectID := "1"
-	keyword := "hello-world"
+	keyword := "library/hello-world"
 
 	fmt.Println("Testing Repos Get API")
 	//-------------------case 1 : response code = 200------------------------//
diff --git a/src/ui/api/search.go b/src/ui/api/search.go
index ded814f1c6..468e481aac 100644
--- a/src/ui/api/search.go
+++ b/src/ui/api/search.go
@@ -99,13 +99,15 @@ func (s *SearchAPI) Get() {
 			}
 		}
 
-		repos, err := dao.GetRepositoryByProjectName(p.Name)
+		total, err := dao.GetTotalOfRepositories(&models.RepositoryQuery{
+			ProjectIDs: []int64{p.ProjectID},
+		})
 		if err != nil {
-			log.Errorf("failed to get repositories of project %s: %v", p.Name, err)
+			log.Errorf("failed to get total of repositories of project %d: %v", p.ProjectID, err)
 			s.CustomAbort(http.StatusInternalServerError, "")
 		}
 
-		p.RepoCount = len(repos)
+		p.RepoCount = total
 
 		projectResult = append(projectResult, p)
 	}
@@ -124,7 +126,7 @@ func (s *SearchAPI) Get() {
 func filterRepositories(projects []*models.Project, keyword string) (
 	[]map[string]interface{}, error) {
 
-	repositories, err := dao.GetAllRepositories()
+	repositories, err := dao.GetRepositories()
 	if err != nil {
 		return nil, err
 	}
diff --git a/src/ui/api/statistic.go b/src/ui/api/statistic.go
index f2ab3283e4..71d4ce77e7 100644
--- a/src/ui/api/statistic.go
+++ b/src/ui/api/statistic.go
@@ -64,17 +64,22 @@ func (s *StatisticAPI) Get() {
 	}
 
 	statistic[PubPC] = (int64)(len(pubProjs))
-
-	ids := []int64{}
-	for _, p := range pubProjs {
-		ids = append(ids, p.ProjectID)
+	if len(pubProjs) == 0 {
+		statistic[PubRC] = 0
+	} else {
+		ids := []int64{}
+		for _, p := range pubProjs {
+			ids = append(ids, p.ProjectID)
+		}
+		n, err := dao.GetTotalOfRepositories(&models.RepositoryQuery{
+			ProjectIDs: ids,
+		})
+		if err != nil {
+			log.Errorf("failed to get total of public repositories: %v", err)
+			s.CustomAbort(http.StatusInternalServerError, "")
+		}
+		statistic[PubRC] = n
 	}
-	n, err := dao.GetTotalOfRepositoriesByProject(ids, "")
-	if err != nil {
-		log.Errorf("failed to get total of public repositories: %v", err)
-		s.CustomAbort(http.StatusInternalServerError, "")
-	}
-	statistic[PubRC] = n
 
 	if s.SecurityCtx.IsSysAdmin() {
 		result, err := s.ProjectMgr.List(nil)
@@ -85,7 +90,7 @@ func (s *StatisticAPI) Get() {
 		statistic[TPC] = result.Total
 		statistic[PriPC] = result.Total - statistic[PubPC]
 
-		n, err := dao.GetTotalOfRepositories("")
+		n, err := dao.GetTotalOfRepositories()
 		if err != nil {
 			log.Errorf("failed to get total of repositories: %v", err)
 			s.CustomAbort(http.StatusInternalServerError, "")
@@ -107,20 +112,25 @@ func (s *StatisticAPI) Get() {
 		}
 
 		statistic[PriPC] = result.Total
+		if result.Total == 0 {
+			statistic[PriRC] = 0
+		} else {
+			ids := []int64{}
+			for _, p := range result.Projects {
+				ids = append(ids, p.ProjectID)
+			}
 
-		ids := []int64{}
-		for _, p := range result.Projects {
-			ids = append(ids, p.ProjectID)
+			n, err := dao.GetTotalOfRepositories(&models.RepositoryQuery{
+				ProjectIDs: ids,
+			})
+			if err != nil {
+				s.HandleInternalServerError(fmt.Sprintf(
+					"failed to get total of repositories for user %s: %v",
+					s.username, err))
+				return
+			}
+			statistic[PriRC] = n
 		}
-
-		n, err = dao.GetTotalOfRepositoriesByProject(ids, "")
-		if err != nil {
-			s.HandleInternalServerError(fmt.Sprintf(
-				"failed to get total of repositories for user %s: %v",
-				s.username, err))
-			return
-		}
-		statistic[PriRC] = n
 	}
 
 	s.Data["json"] = statistic
diff --git a/src/ui/api/utils.go b/src/ui/api/utils.go
index 0f1c2acac3..26cae35642 100644
--- a/src/ui/api/utils.go
+++ b/src/ui/api/utils.go
@@ -86,7 +86,7 @@ func SyncRegistry(pm promgr.ProjectManager) error {
 	}
 
 	var repoRecordsInDB []*models.RepoRecord
-	repoRecordsInDB, err = dao.GetAllRepositories()
+	repoRecordsInDB, err = dao.GetRepositories()
 	if err != nil {
 		log.Errorf("error occurred while getting all registories. %v", err)
 		return err
diff --git a/src/ui/utils/utils.go b/src/ui/utils/utils.go
index 6118551c57..503d2b2f7b 100644
--- a/src/ui/utils/utils.go
+++ b/src/ui/utils/utils.go
@@ -33,7 +33,7 @@ import (
 
 // ScanAllImages scans all images of Harbor by submiting jobs to jobservice, the whole process will move on if failed to submit any job of a single image.
 func ScanAllImages() error {
-	repos, err := dao.GetAllRepositories()
+	repos, err := dao.GetRepositories()
 	if err != nil {
 		log.Errorf("Failed to list all repositories, error: %v", err)
 		return err
@@ -46,7 +46,9 @@ func ScanAllImages() error {
 
 // ScanImagesByProjectID scans all images under a projet, the whole process will move on if failed to submit any job of a single image.
 func ScanImagesByProjectID(id int64) error {
-	repos, err := dao.GetRepositoriesByProject(id, "", 0, 0)
+	repos, err := dao.GetRepositories(&models.RepositoryQuery{
+		ProjectIDs: []int64{id},
+	})
 	if err != nil {
 		log.Errorf("Failed list repositories in project %d, error: %v", id, err)
 		return err