diff --git a/apps/application/flow/step_node/ai_chat_step_node/impl/base_chat_node.py b/apps/application/flow/step_node/ai_chat_step_node/impl/base_chat_node.py
index 5fb38c122..6588012e9 100644
--- a/apps/application/flow/step_node/ai_chat_step_node/impl/base_chat_node.py
+++ b/apps/application/flow/step_node/ai_chat_step_node/impl/base_chat_node.py
@@ -44,7 +44,7 @@ def write_context_stream(node_variable: Dict, workflow_variable: Dict, node: INo
     answer = ''
     for chunk in response:
         answer += chunk.content
-        yield answer
+        yield chunk.content
     _write_context(node_variable, workflow_variable, node, workflow, answer)
 
 
diff --git a/apps/application/flow/step_node/question_node/impl/base_question_node.py b/apps/application/flow/step_node/question_node/impl/base_question_node.py
index 5367b1dc2..445b59aff 100644
--- a/apps/application/flow/step_node/question_node/impl/base_question_node.py
+++ b/apps/application/flow/step_node/question_node/impl/base_question_node.py
@@ -44,7 +44,7 @@ def write_context_stream(node_variable: Dict, workflow_variable: Dict, node: INo
     answer = ''
     for chunk in response:
         answer += chunk.content
-        yield answer
+        yield chunk.content
     _write_context(node_variable, workflow_variable, node, workflow, answer)