diff --git a/apps/application/flow/i_step_node.py b/apps/application/flow/i_step_node.py
index e1bae631a..3a558ace0 100644
--- a/apps/application/flow/i_step_node.py
+++ b/apps/application/flow/i_step_node.py
@@ -105,13 +105,14 @@ class FlowParamsSerializer(serializers.Serializer):
 
     chat_record_id = serializers.CharField(required=True, error_messages=ErrMessage.char("对话记录id"))
 
-    stream = serializers.BooleanField(required=True, error_messages=ErrMessage.base("流式输出"))
+    stream = serializers.BooleanField(required=True, error_messages=ErrMessage.boolean("流式输出"))
 
     client_id = serializers.CharField(required=False, error_messages=ErrMessage.char("客户端id"))
 
     client_type = serializers.CharField(required=False, error_messages=ErrMessage.char("客户端类型"))
 
     user_id = serializers.UUIDField(required=True, error_messages=ErrMessage.char("用户id"))
+    re_chat = serializers.BooleanField(required=True, error_messages=ErrMessage.boolean("换个答案"))
 
 
 class INode:
diff --git a/apps/application/flow/step_node/search_dataset_node/i_search_dataset_node.py b/apps/application/flow/step_node/search_dataset_node/i_search_dataset_node.py
index 436de5a96..0de4e65a0 100644
--- a/apps/application/flow/step_node/search_dataset_node/i_search_dataset_node.py
+++ b/apps/application/flow/step_node/search_dataset_node/i_search_dataset_node.py
@@ -61,11 +61,14 @@ class ISearchDatasetStepNode(INode):
         question = self.workflow_manage.get_reference_field(
             self.node_params_serializer.data.get('question_reference_address')[0],
             self.node_params_serializer.data.get('question_reference_address')[1:])
-        history_chat_record = self.flow_params_serializer.data.get('history_chat_record', [])
-        paragraph_id_list = [p.get('id') for p in flat_map(
-            [get_paragraph_list(chat_record, self.node.id) for chat_record in history_chat_record if
-             chat_record.problem_text == question])]
-        exclude_paragraph_id_list = list(set(paragraph_id_list))
+        exclude_paragraph_id_list = []
+        if self.flow_params_serializer.data.get('re_chat', False):
+            history_chat_record = self.flow_params_serializer.data.get('history_chat_record', [])
+            paragraph_id_list = [p.get('id') for p in flat_map(
+                [get_paragraph_list(chat_record, self.node.id) for chat_record in history_chat_record if
+                 chat_record.problem_text == question])]
+            exclude_paragraph_id_list = list(set(paragraph_id_list))
+
         return self.execute(**self.node_params_serializer.data, question=str(question),
                             exclude_paragraph_id_list=exclude_paragraph_id_list)