diff --git a/src/portal/lib/src/cron-schedule/cron-schedule.component.html b/src/portal/lib/src/cron-schedule/cron-schedule.component.html
index 315560e47..5c19753d9 100644
--- a/src/portal/lib/src/cron-schedule/cron-schedule.component.html
+++ b/src/portal/lib/src/cron-schedule/cron-schedule.component.html
@@ -17,7 +17,7 @@
     <span [hidden]="originScheduleType!==SCHEDULE_TYPE.CUSTOM">{{ "SCHEDULE.CRON" | translate }} :</span>
     <span [hidden]="originScheduleType!==SCHEDULE_TYPE.CUSTOM">{{ oriCron }}</span>
   </div>
-  <button class="btn btn-primary btn-sm" (click)="editSchedule()" id="editSchedule">
+  <button [disabled]="disabled" class="btn btn-primary btn-sm" (click)="editSchedule()" id="editSchedule">
     {{ "BUTTON.EDIT" | translate }}
   </button>
 </div>
diff --git a/src/portal/lib/src/cron-schedule/cron-schedule.component.ts b/src/portal/lib/src/cron-schedule/cron-schedule.component.ts
index ba9abae5b..bf1e764ad 100644
--- a/src/portal/lib/src/cron-schedule/cron-schedule.component.ts
+++ b/src/portal/lib/src/cron-schedule/cron-schedule.component.ts
@@ -27,6 +27,7 @@ export class CronScheduleComponent implements OnChanges {
   @Input() originCron: OriginCron;
   @Input() labelEdit: string;
   @Input() labelCurrent: string;
+  @Input() disabled: boolean;
   dateInvalid: boolean;
   originScheduleType: string;
   oriCron: string;
diff --git a/src/portal/src/app/project/tag-retention/add-rule/add-rule.component.ts b/src/portal/src/app/project/tag-retention/add-rule/add-rule.component.ts
index c08c71e11..271c8c1d0 100644
--- a/src/portal/src/app/project/tag-retention/add-rule/add-rule.component.ts
+++ b/src/portal/src/app/project/tag-retention/add-rule/add-rule.component.ts
@@ -68,7 +68,13 @@ export class AddRuleComponent implements OnInit, OnDestroy {
     }
 
     set num(num) {
-        this.rule.params[this.template] = parseInt(num, 10);
+        if (num) {
+            num = num.trim();
+        }
+        if (parseInt(num, 10) > 0) {
+            num = parseInt(num, 10);
+        }
+        this.rule.params[this.template] = num;
     }
 
     get repoSelect() {
@@ -128,8 +134,8 @@ export class AddRuleComponent implements OnInit, OnDestroy {
     }
 
     canNotAdd(): boolean {
-        if (!this.isAdd) {
-            return compareValue(this.editRuleOrigin, this.rule);
+        if (!this.isAdd && compareValue(this.editRuleOrigin, this.rule)) {
+            return true;
         }
         if (!this.hasParam()) {
             return !(this.rule.template
@@ -138,6 +144,7 @@ export class AddRuleComponent implements OnInit, OnDestroy {
         } else {
             return !(this.rule.template
               && this.rule.params[this.template]
+              && parseInt(this.rule.params[this.template], 10) >= 0
               && this.rule.scope_selectors.repository[0].pattern
               && this.rule.tag_selectors[0].pattern);
         }
diff --git a/src/portal/src/app/project/tag-retention/retention.ts b/src/portal/src/app/project/tag-retention/retention.ts
index b2427751e..749c59f00 100644
--- a/src/portal/src/app/project/tag-retention/retention.ts
+++ b/src/portal/src/app/project/tag-retention/retention.ts
@@ -16,6 +16,7 @@ export class Retention {
     rules: Array<Rule>;
     trigger: {
         kind: string;
+        references: object;
         settings: {
             cron: string;
         }
@@ -31,8 +32,9 @@ export class Retention {
         this.algorithm = "or";
         this.trigger = {
             kind: "Schedule",
+            references: {},
             settings: {
-                cron: "0 0 0 * * *",
+                cron: "",
             }
         };
     }
diff --git a/src/portal/src/app/project/tag-retention/tag-retention.component.html b/src/portal/src/app/project/tag-retention/tag-retention.component.html
index 580b6a074..8c3f4e510 100644
--- a/src/portal/src/app/project/tag-retention/tag-retention.component.html
+++ b/src/portal/src/app/project/tag-retention/tag-retention.component.html
@@ -64,11 +64,11 @@
     </div>
 </div>
 <div class="cron-selection">
-    <cron-selection #cronScheduleComponent [labelCurrent]="label" [labelEdit]='label' [originCron]='originCron()' (inputvalue)="updateCron($event)"></cron-selection>
+    <cron-selection [disabled]="!(retention?.rules?.length > 0)" #cronScheduleComponent [labelCurrent]="label" [labelEdit]='label' [originCron]='originCron()' (inputvalue)="openConfirm($event)"></cron-selection>
 </div>
 <div class="clr-row pt-1">
     <div class="clr-col-2 pt-2"><label class="label-left font-size-54">{{'TAG_RETENTION.RETENTION_RUNS' | translate}}</label></div>
-    <div class="clr-col-10">
+    <div class="clr-col-10 padding-left-4">
         <clr-dg-action-bar>
                 <button [disabled]="!(retention?.rules?.length > 0)" class="btn btn-outline"
                         (click)="isRetentionRunOpened=true">
@@ -162,11 +162,21 @@
 <clr-modal [(clrModalOpen)]="isRetentionRunOpened"
            [clrModalStaticBackdrop]="true" [clrModalClosable]="true">
     <h3 class="modal-title">{{'TAG_RETENTION.RETENTION_RUN' | translate}}</h3>
-    <div class="modal-body">
-        <p class="color-97">
-            {{'TAG_RETENTION.RETENTION_RUN_EXPLAIN' | translate}}
-        </p>
+    <div class="modal-body pt-1">
+        <div class="alert alert-danger" role="alert">
+            <div class="alert-items">
+                <div class="alert-item static">
+                    <div class="alert-icon-wrapper">
+                        <clr-icon class="alert-icon" shape="exclamation-triangle"></clr-icon>
+                    </div>
+                    <span class="alert-text">
+                    {{'TAG_RETENTION.RETENTION_RUN_EXPLAIN' | translate}}
+                </span>
+                </div>
+            </div>
+        </div>
     </div>
+
     <div class="modal-footer">
         <button type="button" class="btn btn-outline"
                 (click)="isRetentionRunOpened=false">{{'BUTTON.CANCEL' | translate}}</button>
@@ -174,7 +184,7 @@
     </div>
 </clr-modal>
 <clr-modal [(clrModalOpen)]="isAbortedOpened"
-           [clrModalStaticBackdrop]="true" [clrModalClosable]="true">
+                       [clrModalStaticBackdrop]="true" [clrModalClosable]="true">
     <h3 class="modal-title">{{'TAG_RETENTION.RETENTION_RUN_ABORTED' | translate}}</h3>
     <div class="modal-body">
         <p class="color-97">{{'TAG_RETENTION.RETENTION_RUN_ABORTED_EXPLAIN' | translate}}</p>
@@ -184,4 +194,25 @@
                 (click)="abortRetention()">{{'BUTTON.OK' | translate}}</button>
     </div>
 </clr-modal>
+<clr-modal [(clrModalOpen)]="isConfirmOpened"
+           [clrModalStaticBackdrop]="true" [clrModalClosable]="true">
+    <h3 class="modal-title">{{'TAG_RETENTION.SCHEDULE' | translate}}</h3>
+    <div class="modal-body pt-1">
+        <div class="alert alert-danger" role="alert">
+            <div class="alert-items">
+                <div class="alert-item static">
+                    <div class="alert-icon-wrapper">
+                        <clr-icon class="alert-icon" shape="exclamation-triangle"></clr-icon>
+                    </div>
+                    <span class="alert-text">
+                    {{'TAG_RETENTION.SCHEDULE_WARNING' | translate}}
+                </span>
+                </div>
+            </div>
+        </div>
+    </div>
+    <div class="modal-footer">
+        <button type="button" (click)="closeConfirm()" class="btn btn-primary">{{'BUTTON.OK' | translate}}</button>
+    </div>
+</clr-modal>
 <div class="backdrop-transparent" (click)="ruleIndex = -1" *ngIf="ruleIndex !== -1"></div>
\ No newline at end of file
diff --git a/src/portal/src/app/project/tag-retention/tag-retention.component.scss b/src/portal/src/app/project/tag-retention/tag-retention.component.scss
index abab3d670..1a0a4ce41 100644
--- a/src/portal/src/app/project/tag-retention/tag-retention.component.scss
+++ b/src/portal/src/app/project/tag-retention/tag-retention.component.scss
@@ -57,4 +57,7 @@
 }
 .font-size-54 {
   font-size: .541667rem;
+}
+.padding-left-4 {
+  padding-left: 4px;
 }
\ No newline at end of file
diff --git a/src/portal/src/app/project/tag-retention/tag-retention.component.ts b/src/portal/src/app/project/tag-retention/tag-retention.component.ts
index f5fa9a10f..a39ec13c6 100644
--- a/src/portal/src/app/project/tag-retention/tag-retention.component.ts
+++ b/src/portal/src/app/project/tag-retention/tag-retention.component.ts
@@ -58,6 +58,8 @@ export class TagRetentionComponent implements OnInit {
     projectId: number;
     isRetentionRunOpened: boolean = false;
     isAbortedOpened: boolean = false;
+    isConfirmOpened: boolean = false;
+    cron: string;
     selectedItem: any = null;
     ruleIndex: number = -1;
     index: number = -1;
@@ -84,8 +86,8 @@ export class TagRetentionComponent implements OnInit {
     }
     originCron(): OriginCron {
         let originCron: OriginCron = {
-            type: SCHEDULE_TYPE.DAILY,
-            cron: "0 0 0 * * *"
+            type: SCHEDULE_TYPE.NONE,
+            cron: ""
         };
         originCron.cron = this.retention.trigger.settings.cron;
         if (originCron.cron === "") {
@@ -118,6 +120,18 @@ export class TagRetentionComponent implements OnInit {
         this.getRetention();
         this.getMetadata();
     }
+    openConfirm(cron: string) {
+      if (cron) {
+        this.isConfirmOpened = true;
+        this.cron = cron;
+      } else {
+        this.updateCron(cron);
+      }
+    }
+    closeConfirm() {
+      this.isConfirmOpened = false;
+      this.updateCron(this.cron);
+    }
     updateCron(cron: string) {
         let retention: Retention = clone(this.retention);
         retention.trigger.settings.cron = cron;
@@ -133,7 +147,7 @@ export class TagRetentionComponent implements OnInit {
             this.tagRetentionService.updateRetention(this.retentionId, retention).subscribe(
                 response => {
                     this.cronScheduleComponent.isEditMode = false;
-                    this.retention = retention;
+                    this.getRetention();
                 }, error => {
                     this.errorHandler.error(error);
                 });
@@ -169,15 +183,14 @@ export class TagRetentionComponent implements OnInit {
         this.addRuleComponent.isAdd = false;
         this.ruleIndex = -1;
     }
-  toggleDisable(index, isActionDisable) {
+    toggleDisable(index, isActionDisable) {
         let retention: Retention = clone(this.retention);
         retention.rules[index].disabled = isActionDisable;
         this.ruleIndex = -1;
         this.loadingRule = true;
         this.tagRetentionService.updateRetention(this.retentionId, retention).subscribe(
             response => {
-                this.loadingRule = false;
-                this.retention = retention;
+                this.getRetention();
             }, error => {
                 this.loadingRule = false;
                 this.errorHandler.error(error);
@@ -186,12 +199,15 @@ export class TagRetentionComponent implements OnInit {
     deleteRule(index) {
         let retention: Retention = clone(this.retention);
         retention.rules.splice(index, 1);
+        // if rules is empty, clear schedule.
+        if (retention.rules && retention.rules.length === 0) {
+          retention.trigger.settings.cron = "";
+        }
         this.ruleIndex = -1;
         this.loadingRule = true;
         this.tagRetentionService.updateRetention(this.retentionId, retention).subscribe(
             response => {
-                this.loadingRule = false;
-                this.retention = retention;
+                this.getRetention();
             }, error => {
                 this.loadingRule = false;
                 this.errorHandler.error(error);
@@ -340,8 +356,7 @@ export class TagRetentionComponent implements OnInit {
             } else {
                 this.tagRetentionService.updateRetention(this.retentionId, retention).subscribe(
                     response => {
-                        this.loadingRule = false;
-                        this.retention = retention;
+                        this.getRetention();
                     }, error => {
                         this.loadingRule = false;
                         this.errorHandler.error(error);
@@ -352,8 +367,7 @@ export class TagRetentionComponent implements OnInit {
             retention.rules[this.editIndex] = rule;
             this.tagRetentionService.updateRetention(this.retentionId, retention).subscribe(
                 response => {
-                    this.retention = retention;
-                    this.loadingRule = false;
+                    this.getRetention();
                 }, error => {
                     this.errorHandler.error(error);
                     this.loadingRule = false;
diff --git a/src/portal/src/app/project/tag-retention/tag-retention.service.ts b/src/portal/src/app/project/tag-retention/tag-retention.service.ts
index 0792fb622..76940c324 100644
--- a/src/portal/src/app/project/tag-retention/tag-retention.service.ts
+++ b/src/portal/src/app/project/tag-retention/tag-retention.service.ts
@@ -28,8 +28,8 @@ export class TagRetentionService {
         "latestPushedK": "RULE_NAME_3",
         "latestPulledN": "RULE_NAME_4",
         "always": "RULE_NAME_5",
-        "dayspl": "RULE_NAME_6",
-        "daysps": "RULE_NAME_7",
+        "nDaysSinceLastPull": "RULE_NAME_6",
+        "nDaysSinceLastPush": "RULE_NAME_7",
         "the images from the last # days": "RULE_TEMPLATE_1",
         "the most recent active # images": "RULE_TEMPLATE_2",
         "the most recently pushed # images": "RULE_TEMPLATE_3",
diff --git a/src/portal/src/i18n/lang/en-us-lang.json b/src/portal/src/i18n/lang/en-us-lang.json
index ae060f0f8..82eb7df78 100644
--- a/src/portal/src/i18n/lang/en-us-lang.json
+++ b/src/portal/src/i18n/lang/en-us-lang.json
@@ -1206,7 +1206,9 @@
         "RULE_NAME_6": " the images pulled within the last {{number}} days",
         "RULE_NAME_7": " the images pushed within the last {{number}} days",
         "RULE_TEMPLATE_6": " the images pulled within the last # days",
-        "RULE_TEMPLATE_7": " the images pushed within the last # days"
+        "RULE_TEMPLATE_7": " the images pushed within the last # days",
+        "SCHEDULE": "Schedule",
+        "SCHEDULE_WARNING": "Executing the retention policy can have adverse effects to the images in this project and affected image tags will be deleted."
     }
 
 }
diff --git a/src/portal/src/i18n/lang/es-es-lang.json b/src/portal/src/i18n/lang/es-es-lang.json
index df102d442..2c9c5e02e 100644
--- a/src/portal/src/i18n/lang/es-es-lang.json
+++ b/src/portal/src/i18n/lang/es-es-lang.json
@@ -1203,7 +1203,9 @@
         "RULE_NAME_6": " the images pulled within the last {{number}} days",
         "RULE_NAME_7": " the images pushed within the last {{number}} days",
         "RULE_TEMPLATE_6": " the images pulled within the last # days",
-        "RULE_TEMPLATE_7": " the images pushed within the last # days"
+        "RULE_TEMPLATE_7": " the images pushed within the last # days",
+        "SCHEDULE": "Schedule",
+        "SCHEDULE_WARNING": "Executing the retention policy can have adverse effects to the images in this project and affected image tags will be deleted."
     }
 
 }
diff --git a/src/portal/src/i18n/lang/fr-fr-lang.json b/src/portal/src/i18n/lang/fr-fr-lang.json
index ae3d5faa3..bd948d912 100644
--- a/src/portal/src/i18n/lang/fr-fr-lang.json
+++ b/src/portal/src/i18n/lang/fr-fr-lang.json
@@ -1175,7 +1175,9 @@
         "RULE_NAME_6": " the images pulled within the last {{number}} days",
         "RULE_NAME_7": " the images pushed within the last {{number}} days",
         "RULE_TEMPLATE_6": " the images pulled within the last # days",
-        "RULE_TEMPLATE_7": " the images pushed within the last # days"
+        "RULE_TEMPLATE_7": " the images pushed within the last # days",
+        "SCHEDULE": "Schedule",
+        "SCHEDULE_WARNING": "Executing the retention policy can have adverse effects to the images in this project and affected image tags will be deleted."
     }
 
 }
diff --git a/src/portal/src/i18n/lang/pt-br-lang.json b/src/portal/src/i18n/lang/pt-br-lang.json
index 13e36487d..3ecec7b91 100644
--- a/src/portal/src/i18n/lang/pt-br-lang.json
+++ b/src/portal/src/i18n/lang/pt-br-lang.json
@@ -1200,7 +1200,9 @@
         "RULE_NAME_6": " the images pulled within the last {{number}} days",
         "RULE_NAME_7": " the images pushed within the last {{number}} days",
         "RULE_TEMPLATE_6": " the images pulled within the last # days",
-        "RULE_TEMPLATE_7": " the images pushed within the last # days"
+        "RULE_TEMPLATE_7": " the images pushed within the last # days",
+        "SCHEDULE": "Schedule",
+        "SCHEDULE_WARNING": "Executing the retention policy can have adverse effects to the images in this project and affected image tags will be deleted."
     }
 
     
diff --git a/src/portal/src/i18n/lang/zh-cn-lang.json b/src/portal/src/i18n/lang/zh-cn-lang.json
index 2f4606fe9..313b23703 100644
--- a/src/portal/src/i18n/lang/zh-cn-lang.json
+++ b/src/portal/src/i18n/lang/zh-cn-lang.json
@@ -1202,7 +1202,9 @@
         "RULE_NAME_6": "最近{{number}}天被拉取过的镜像",
         "RULE_NAME_7": "最近{{number}}天被推送过的镜像",
         "RULE_TEMPLATE_6": "最近#天被拉取过的镜像",
-        "RULE_TEMPLATE_7": "最近#天被推送过的镜像"
+        "RULE_TEMPLATE_7": "最近#天被推送过的镜像",
+        "SCHEDULE": "定时任务",
+        "SCHEDULE_WARNING": "执行保留策略将对该项目中的镜像产生反向影响，受影响的镜像tags将会被删除。"
     }
 
 }