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 8670a71aa3..4035b230ae 100644
--- a/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
+++ b/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
@@ -419,6 +419,9 @@ class KnowledgeRetrievalNode(LLMUsageTrackingMixin, Node[KnowledgeRetrievalNodeD
                             source["content"] = f"question:{segment.get_sign_content()} \nanswer:{segment.answer}"
                         else:
                             source["content"] = segment.get_sign_content()
+                        # Add summary if available 
+                        if record.summary:
+                            source["summary"] = record.summary
                         retrieval_resource_list.append(source)
         if retrieval_resource_list:
             retrieval_resource_list = sorted(
diff --git a/api/core/workflow/nodes/llm/node.py b/api/core/workflow/nodes/llm/node.py
index dfb55dcd80..52f3c98d4f 100644
--- a/api/core/workflow/nodes/llm/node.py
+++ b/api/core/workflow/nodes/llm/node.py
@@ -685,6 +685,8 @@ class LLMNode(Node[LLMNodeData]):
                         if "content" not in item:
                             raise InvalidContextStructureError(f"Invalid context structure: {item}")
 
+                        if "summary" in item and item["summary"]:
+                            context_str += item["summary"] + "\n"
                         context_str += item["content"] + "\n"
 
                         retriever_resource = self._convert_to_original_retriever_resource(item)