diff --git a/apps/application/serializers/chat_message_serializers.py b/apps/application/serializers/chat_message_serializers.py
index f529e7e8af0..cc658f71dbd 100644
--- a/apps/application/serializers/chat_message_serializers.py
+++ b/apps/application/serializers/chat_message_serializers.py
@@ -94,6 +94,7 @@ def to_pipeline_manage_params(self, problem_text: str, post_response_handler: Po
                 'client_type': client_type}
 
     def append_chat_record(self, chat_record: ChatRecord, client_id=None):
+        chat_record.problem_text = chat_record.problem_text[0:1024] if chat_record.problem_text is not None else ""
         # 存入缓存中
         self.chat_record_list.append(chat_record)
         if self.application.id is not None:
@@ -138,7 +139,7 @@ def handler(self,
 
 class ChatMessageSerializer(serializers.Serializer):
     chat_id = serializers.UUIDField(required=True, error_messages=ErrMessage.char("对话id"))
-    message = serializers.CharField(required=True, error_messages=ErrMessage.char("用户问题"), max_length=1024)
+    message = serializers.CharField(required=True, error_messages=ErrMessage.char("用户问题"))
     stream = serializers.BooleanField(required=True, error_messages=ErrMessage.char("是否流式回答"))
     re_chat = serializers.BooleanField(required=True, error_messages=ErrMessage.char("是否重新回答"))
     application_id = serializers.UUIDField(required=False, allow_null=True, error_messages=ErrMessage.uuid("应用id"))
diff --git a/ui/src/views/log/component/EditContentDialog.vue b/ui/src/views/log/component/EditContentDialog.vue
index 2688b246deb..8adfe3f8f71 100644
--- a/ui/src/views/log/component/EditContentDialog.vue
+++ b/ui/src/views/log/component/EditContentDialog.vue
@@ -172,7 +172,7 @@ const open = (data: any) => {
   getDataset()
   form.value.chat_id = data.chat_id
   form.value.record_id = data.id
-  form.value.problem_text = data.problem_text
+  form.value.problem_text = data.problem_text ? data.problem_text.substring(0, 256) : ''
   form.value.content = data.answer_text
   formRef.value?.clearValidate()
   dialogVisible.value = true