diff --git a/apps/application/flow/loop_workflow_manage.py b/apps/application/flow/loop_workflow_manage.py
index c236b15dcc5..0272d2c9940 100644
--- a/apps/application/flow/loop_workflow_manage.py
+++ b/apps/application/flow/loop_workflow_manage.py
@@ -186,6 +186,9 @@ def generate_prompt(self, prompt: str):
         @return: 格式化后的提示词
         """
 
+        if not prompt:
+            return ''
+
         context = {**self.get_workflow_content(), **self.parentWorkflowManage.get_workflow_content()}
         prompt = self.reset_prompt(prompt)
         prompt_template = PromptTemplate.from_template(prompt, template_format='jinja2')
diff --git a/apps/application/flow/workflow_manage.py b/apps/application/flow/workflow_manage.py
index 1bf5a0a31ca..d076c086b72 100644
--- a/apps/application/flow/workflow_manage.py
+++ b/apps/application/flow/workflow_manage.py
@@ -781,6 +781,9 @@ def generate_prompt(self, prompt: str):
         @param prompt: 提示词信息
         @return: 格式化后的提示词
         """
+        if not prompt:
+            return ''
+
         context = self.get_workflow_content()
         prompt = self.reset_prompt(prompt)
         prompt_template = PromptTemplate.from_template(prompt, template_format='jinja2')
diff --git a/apps/chat/serializers/chat.py b/apps/chat/serializers/chat.py
index 4514dc457bc..1e5dcce67a4 100644
--- a/apps/chat/serializers/chat.py
+++ b/apps/chat/serializers/chat.py
@@ -73,9 +73,10 @@ def is_valid(self, *, raise_exception=False):
 
 class ChatMessageSerializers(serializers.Serializer):
     message = serializers.CharField(required=True, label=_("User Questions"))
-    stream = serializers.BooleanField(required=True,
+    stream = serializers.BooleanField(required=False, default=False,
                                       label=_("Is the answer in streaming mode"))
-    re_chat = serializers.BooleanField(required=True, label=_("Do you want to reply again"))
+    re_chat = serializers.BooleanField(required=False, default=False,
+                                       label=_("Do you want to reply again"))
     chat_record_id = serializers.UUIDField(required=False, allow_null=True,
                                            label=_("Conversation record id"))
 
@@ -336,8 +337,8 @@ def is_valid_application_simple(self, *, chat_info: ChatInfo, raise_exception=Fa
 
     def chat_simple(self, chat_info: ChatInfo, instance, base_to_response):
         message = instance.get('message')
-        re_chat = instance.get('re_chat')
-        stream = instance.get('stream')
+        re_chat = instance.get('re_chat', False)
+        stream = instance.get('stream', False)
         chat_user_id = self.data.get('chat_user_id')
         chat_user_type = self.data.get('chat_user_type')
         ip_address = self.data.get('ip_address')
@@ -391,8 +392,8 @@ def get_chat_record(chat_info, chat_record_id):
 
     def chat_work_flow(self, chat_info: ChatInfo, instance: dict, base_to_response):
         message = instance.get('message')
-        re_chat = instance.get('re_chat')
-        stream = instance.get('stream')
+        re_chat = instance.get('re_chat', False)
+        stream = instance.get('stream', False)
         chat_user_id = self.data.get("chat_user_id")
         chat_user_type = self.data.get('chat_user_type')
         ip_address = self.data.get('ip_address')