diff --git a/lib/ng-nest/ui/time-ago/time-ago.pipe.ts b/lib/ng-nest/ui/time-ago/time-ago.pipe.ts
index 6cf56b5d9..4a23c4d1c 100644
--- a/lib/ng-nest/ui/time-ago/time-ago.pipe.ts
+++ b/lib/ng-nest/ui/time-ago/time-ago.pipe.ts
@@ -9,7 +9,8 @@ export class XTimeAgoPipe implements PipeTransform {
   locale: XI18nTimeAgo = {};
   private catchContent: any;
   constructor(private datePipe: DatePipe, private i18n: XI18nService) {}
-  transform(input: XDate): string {
+  transform(input?: XDate): string {
+    if (!input) return '';
     const date = XToDate(input);
     if (isNaN(date.valueOf())) {
       return input as string;
diff --git a/lib/ng-nest/ui/timeline/timeline.property.ts b/lib/ng-nest/ui/timeline/timeline.property.ts
index f876a1aef..a287acaa0 100644
--- a/lib/ng-nest/ui/timeline/timeline.property.ts
+++ b/lib/ng-nest/ui/timeline/timeline.property.ts
@@ -1,4 +1,4 @@
-import { XType, XSize, XData, XTemplate, XProperty, XIdentityProperty, XDataConvert, XWithConfig } from '@ng-nest/ui/core';
+import { XType, XSize, XData, XTemplate, XProperty, XIdentityProperty, XDataConvert, XWithConfig, XDate } from '@ng-nest/ui/core';
 import { Input, Component } from '@angular/core';
 
 /**
@@ -45,7 +45,7 @@ export interface XTimelineNode extends XIdentityProperty {
    * @zh_CN 时间
    * @en_US Time
    */
-  time?: string | Date;
+  time?: XDate;
   /**
    * @zh_CN 内容
    * @en_US Content