diff --git a/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py b/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
index cda1446399..5e5c9f520e 100644
--- a/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
+++ b/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
@@ -388,6 +388,15 @@ class KnowledgeRetrievalNode(BaseNode):
                                 "segment_id": segment.id,
                                 "retriever_from": "workflow",
                                 "score": record.score or 0.0,
+                                "child_chunks": [
+                                    {
+                                        "id": str(getattr(chunk, "id", "")),
+                                        "content": str(getattr(chunk, "content", "")),
+                                        "position": int(getattr(chunk, "position", 0)),
+                                        "score": float(getattr(chunk, "score", 0.0)),
+                                    }
+                                    for chunk in (record.child_chunks or [])
+                                ],
                                 "segment_hit_count": segment.hit_count,
                                 "segment_word_count": segment.word_count,
                                 "segment_position": segment.position,