diff --git a/apps/application/flow/step_node/loop_node/impl/base_loop_node.py b/apps/application/flow/step_node/loop_node/impl/base_loop_node.py
index 9d8d37f37a7..7ffbaf26d58 100644
--- a/apps/application/flow/step_node/loop_node/impl/base_loop_node.py
+++ b/apps/application/flow/step_node/loop_node/impl/base_loop_node.py
@@ -171,6 +171,8 @@ def loop(workflow_manage_new_instance, node: INode, generate_loop):
                 'child_node': child_node}
             content_chunk = (chunk.get('content', '') or '')
             reasoning_content_chunk = (chunk.get('reasoning_content', '') or '')
+            if chunk.get('real_node_id'):
+                chunk['real_node_id'] = chunk['real_node_id'] + '__' + str(index)
             reasoning_content += reasoning_content_chunk
             answer += content_chunk
             yield chunk