diff --git a/packages/fineui/src/widget/dynamicdatetime/dynamicdatetime.combo.js b/packages/fineui/src/widget/dynamicdatetime/dynamicdatetime.combo.js
index 73caee9fa..3ac88d788 100644
--- a/packages/fineui/src/widget/dynamicdatetime/dynamicdatetime.combo.js
+++ b/packages/fineui/src/widget/dynamicdatetime/dynamicdatetime.combo.js
@@ -44,7 +44,6 @@ export class DynamicDateTimeCombo extends Single {
         },
         isNeedAdjustHeight: false,
         isNeedAdjustWidth: false,
-        value: null,
     };
 
     static EVENT_KEY_DOWN = "EVENT_KEY_DOWN";