diff --git a/src/ui_ng/src/app/repository/repository.service.ts b/src/ui_ng/src/app/repository/repository.service.ts
index 7d2de726a..03dcfe9bd 100644
--- a/src/ui_ng/src/app/repository/repository.service.ts
+++ b/src/ui_ng/src/app/repository/repository.service.ts
@@ -28,10 +28,11 @@ export class RepositoryService {
   constructor(private http: Http){}
 
   listRepositories(projectId: number, repoName: string, page?: number, pageSize?: number): Observable<any> {
-    console.log('List repositories with project ID:' + projectId);
     let params = new URLSearchParams();
-    params.set('page', page + '');
-    params.set('page_size', pageSize + '');
+    if(page && pageSize) {
+      params.set('page', page + '');
+      params.set('page_size', pageSize + '');
+    }
     return this.http
                .get(`/api/repositories?project_id=${projectId}&q=${repoName}&detail=1`, {search: params})
                .map(response=>response)
@@ -60,7 +61,7 @@ export class RepositoryService {
                     tags.forEach(t=>{
                       for(let i = 0; i < signatures.length; i++) {
                         if(signatures[i].tag === t.tag) {
-                          t.signed = true;
+                          t.signed = 1;
                           break;
                         }
                       }
@@ -68,14 +69,13 @@ export class RepositoryService {
                     return tags;
                   })
                   .catch(error=>{
-                    return tags;
+                    return Observable.of(tags);
                   })
                })
                .catch(error=>Observable.throw(error));
   }
 
   deleteRepository(repoName: string): Observable<any> {
-    console.log('Delete repository with repo name:' + repoName);
     return this.http
                .delete(`/api/repositories/${repoName}/tags`)
                .map(response=>response.status)
@@ -83,7 +83,6 @@ export class RepositoryService {
   }
 
   deleteRepoByTag(repoName: string, tag: string): Observable<any> {
-    console.log('Delete repository with repo name:' + repoName + ', tag:' + tag);
     return this.http
                .delete(`/api/repositories/${repoName}/tags/${tag}`)
                .map(response=>response.status)
diff --git a/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.html b/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.html
index c0e1acf8f..4d38410c7 100644
--- a/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.html
+++ b/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.html
@@ -24,23 +24,27 @@
     <clr-dg-column>{{'REPOSITORY.DOCKER_VERSION' | translate}}</clr-dg-column>
     <clr-dg-column>{{'REPOSITORY.ARCHITECTURE' | translate}}</clr-dg-column>
     <clr-dg-column>{{'REPOSITORY.OS' | translate}}</clr-dg-column>
-    <clr-dg-row *ngFor="let t of tags" [clrDgItem]='t'>
-        <clr-dg-action-overflow>
-            <button class="action-item" (click)="showTagID('tag', t)">{{'REPOSITORY.COPY_ID' | translate}}</button>
-            <button class="action-item" (click)="showTagID('parent', t)">{{'REPOSITORY.COPY_PARENT_ID' | translate}}</button>
-            <button class="action-item" [hidden]="!hasProjectAdminRole" (click)="deleteTag(t)">{{'REPOSITORY.DELETE' | translate}}</button>
-        </clr-dg-action-overflow>
-        <clr-dg-cell>{{t.tag}}</clr-dg-cell>
-        <clr-dg-cell>{{t.pullCommand}}</clr-dg-cell>
-        <clr-dg-cell *ngIf="withNotary">
-            <clr-icon shape="check" *ngIf="t.signed" style="color: #1D5100;"></clr-icon>
-            <clr-icon shape="close" *ngIf="!t.signed" style="color: #C92100;"></clr-icon>
-        </clr-dg-cell>
-        <clr-dg-cell>{{t.author}}</clr-dg-cell>
-        <clr-dg-cell>{{t.created | date: 'short'}}</clr-dg-cell>
-        <clr-dg-cell>{{t.dockerVersion}}</clr-dg-cell>
-        <clr-dg-cell>{{t.architecture}}</clr-dg-cell>
-        <clr-dg-cell>{{t.os}}</clr-dg-cell>
+    <clr-dg-row *clrDgItems="let t of tags" [clrDgItem]='t'>
+      <clr-dg-action-overflow>
+        <button class="action-item" (click)="showTagID('tag', t)">{{'REPOSITORY.COPY_ID' | translate}}</button>
+        <button class="action-item" (click)="showTagID('parent', t)">{{'REPOSITORY.COPY_PARENT_ID' | translate}}</button>
+        <button class="action-item" [hidden]="!hasProjectAdminRole" (click)="deleteTag(t)">{{'REPOSITORY.DELETE' | translate}}</button>
+      </clr-dg-action-overflow>
+      <clr-dg-cell>{{t.tag}}</clr-dg-cell>
+      <clr-dg-cell>{{t.pullCommand}}</clr-dg-cell>
+      <clr-dg-cell *ngIf="withNotary"  [ngSwitch]="t.signed">
+        <clr-icon shape="check" *ngSwitchCase="1" style="color: #1D5100;"></clr-icon>
+        <clr-icon shape="close" *ngSwitchCase="0" style="color: #C92100;"></clr-icon>
+        <a href="javascript:void(0)" *ngSwitchDefault role="tooltip" aria-haspopup="true" class="tooltip tooltip-top-right">
+          <clr-icon shape="help" style="color: #565656;" size="16"></clr-icon>
+          <span class="tooltip-content">{{'REPOSITORY.NOTARY_IS_UNDETERMINED' | translate}}</span>
+        </a>
+      </clr-dg-cell>
+      <clr-dg-cell>{{t.author}}</clr-dg-cell>
+      <clr-dg-cell>{{t.created | date: 'short'}}</clr-dg-cell>
+      <clr-dg-cell>{{t.dockerVersion}}</clr-dg-cell>
+      <clr-dg-cell>{{t.architecture}}</clr-dg-cell>
+      <clr-dg-cell>{{t.os}}</clr-dg-cell>
     </clr-dg-row>
     <clr-dg-footer>{{tags ? tags.length : 0}} {{'REPOSITORY.ITEMS' | translate}}</clr-dg-footer>
 </clr-datagrid>
\ No newline at end of file
diff --git a/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.ts b/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.ts
index 017d3de0f..2a19de475 100644
--- a/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.ts
+++ b/src/ui_ng/src/app/repository/tag-repository/tag-repository.component.ts
@@ -11,7 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-import { Component, OnInit, OnDestroy } from '@angular/core';
+import { Component, OnInit, OnDestroy, ChangeDetectionStrategy, ChangeDetectorRef } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
 
 import { RepositoryService } from '../repository.service';
@@ -35,7 +35,8 @@ import { Project } from '../../project/project';
 @Component({
   selector: 'tag-repository',
   templateUrl: 'tag-repository.component.html',
-  styleUrls: ['./tag-repository.component.css']
+  styleUrls: ['./tag-repository.component.css'],
+  changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class TagRepositoryComponent implements OnInit, OnDestroy {
 
@@ -66,7 +67,8 @@ export class TagRepositoryComponent implements OnInit, OnDestroy {
     private deletionDialogService: ConfirmationDialogService,
     private repositoryService: RepositoryService,
     private appConfigService: AppConfigService,
-    private session: SessionService){
+    private session: SessionService,
+    private ref: ChangeDetectorRef){
     
     this.subscription = this.deletionDialogService.confirmationConfirm$.subscribe(
       message => {
@@ -117,19 +119,31 @@ export class TagRepositoryComponent implements OnInit, OnDestroy {
 
   retrieve() {
     this.tags = [];
+    this.repositoryService
+        .listTags(this.repoName)
+        .subscribe(
+          items => this.listTags(items),
+          error => this.messageHandlerService.handleError(error));
+   
     if(this.withNotary) {
       this.repositoryService
-          .listTagsWithVerifiedSignatures(this.repoName)
+          .listNotarySignatures(this.repoName)
           .subscribe(
-            items => this.listTags(items),
-            error => this.messageHandlerService.handleError(error));
-    } else {
-      this.repositoryService
-          .listTags(this.repoName)
-          .subscribe(
-            items => this.listTags(items),
-            error => this.messageHandlerService.handleError(error));
-    }
+            signatures => {
+              this.tags.forEach((t, n)=>{
+                let signed = false;
+                for(let i = 0; i < signatures.length; i++) {
+                  if (signatures[i].tag === t.tag) {
+                    signed = true;
+                    break;
+                  }
+                }
+                this.tags[n].signed = (signed) ? 1 : 0;
+                this.ref.markForCheck();
+              });
+            },
+            error => console.error('Cannot determine the signature of this tag.'));
+      }
   }
 
   private listTags(tags: Tag[]): void {
@@ -148,6 +162,8 @@ export class TagRepositoryComponent implements OnInit, OnDestroy {
       tag.parent = data['parent'];
       this.tags.push(tag);
     });
+    let hnd = setInterval(()=>this.ref.markForCheck(), 100);
+    setTimeout(()=>clearInterval(hnd), 1000);
   }
 
   deleteTag(tag: TagView) {
diff --git a/src/ui_ng/src/app/repository/tag-view.ts b/src/ui_ng/src/app/repository/tag-view.ts
index 63d5523b0..9c164be09 100644
--- a/src/ui_ng/src/app/repository/tag-view.ts
+++ b/src/ui_ng/src/app/repository/tag-view.ts
@@ -14,7 +14,7 @@
 export class TagView {
   tag: string;
   pullCommand: string;
-  signed: boolean;
+  signed: number = -1;
   author: string;
   created: Date;
   dockerVersion: string;
diff --git a/src/ui_ng/src/app/repository/tag.ts b/src/ui_ng/src/app/repository/tag.ts
index 5a7b70979..9c9087ed0 100644
--- a/src/ui_ng/src/app/repository/tag.ts
+++ b/src/ui_ng/src/app/repository/tag.ts
@@ -36,5 +36,5 @@ export class Tag {
       }
     ];
   };
-  signed: boolean;
+  signed: number;
 }
\ No newline at end of file
diff --git a/src/ui_ng/src/i18n/lang/en-us-lang.json b/src/ui_ng/src/i18n/lang/en-us-lang.json
index bbcddafd7..ccfa36de2 100644
--- a/src/ui_ng/src/i18n/lang/en-us-lang.json
+++ b/src/ui_ng/src/i18n/lang/en-us-lang.json
@@ -325,7 +325,8 @@
         "POP_REPOS": "Popular Repositories",
         "DELETED_REPO_SUCCESS": "Deleted repository successfully.",
         "DELETED_TAG_SUCCESS": "Deleted tag successfully.",
-        "COPY": "Copy"
+        "COPY": "Copy",
+        "NOTARY_IS_UNDETERMINED": "Cannot determine the signature of this tag."
     },
     "ALERT": {
         "FORM_CHANGE_CONFIRMATION": "Some changes are not saved yet. Do you want to cancel?"
diff --git a/src/ui_ng/src/i18n/lang/zh-cn-lang.json b/src/ui_ng/src/i18n/lang/zh-cn-lang.json
index 70298c9ef..0351163a3 100644
--- a/src/ui_ng/src/i18n/lang/zh-cn-lang.json
+++ b/src/ui_ng/src/i18n/lang/zh-cn-lang.json
@@ -325,7 +325,8 @@
         "POP_REPOS": "受欢迎的镜像仓库",
         "DELETED_REPO_SUCCESS": "成功删除镜像仓库。",
         "DELETED_TAG_SUCCESS": "成功删除镜像标签。",
-        "COPY": "复制"
+        "COPY": "复制",
+        "NOTARY_IS_UNDETERMINED": "无法确定镜像标签签名。"
     },
     "ALERT": {
         "FORM_CHANGE_CONFIRMATION": "表单内容改变，确认是否取消?"