diff --git a/packages/date-picker/src/panel/date.vue b/packages/date-picker/src/panel/date.vue
index b74e23ed3..b12ea92aa 100644
--- a/packages/date-picker/src/panel/date.vue
+++ b/packages/date-picker/src/panel/date.vue
@@ -441,7 +441,7 @@
         if (this.format && this.format.indexOf('ss') === -1) {
           return 'HH:mm';
         } else {
-          return 'HH:mm:ss';
+          return 'HH:mm:ss333';
         }
       }
     }