diff --git a/server/api.py b/server/api.py
index 69d9c76..669324f 100644
--- a/server/api.py
+++ b/server/api.py
@@ -144,7 +144,7 @@ def mount_knowledge_routes(app: FastAPI):
     from server.knowledge_base.kb_doc_api import (list_files, upload_docs, delete_docs,
                                                 update_docs, download_doc, recreate_vector_store,
                                                 search_docs, DocumentWithVSId, update_info,
-                                                update_docs_by_id,search_content,Document)
+                                                update_docs_by_id,search_content)
 
     app.post("/chat/knowledge_base_chat",
              tags=["Chat"],
@@ -191,7 +191,7 @@ def mount_knowledge_routes(app: FastAPI):
 
     app.post("/knowledge_base/search_content",
              tags=["Knowledge Base Management"],
-             response_model=List[Document],
+             response_model=List[DocumentWithVSId],
              summary="搜索文档库"
              )(search_content)
     
diff --git a/server/chat/knowledge_base_chat.py b/server/chat/knowledge_base_chat.py
index 5e60a3e..5a14c26 100644
--- a/server/chat/knowledge_base_chat.py
+++ b/server/chat/knowledge_base_chat.py
@@ -97,7 +97,6 @@ async def knowledge_base_chat(query: str = Body(..., description="用户输入",
                                             max_length=RERANKER_MAX_LENGTH,
                                             model_name_or_path=reranker_model_path
                                             )
-            print(docs)
             docs = reranker_model.compress_documents(documents=docs,
                                                      query=query)
             print("---------after rerank------------------")
diff --git a/server/knowledge_base/kb_doc_api.py b/server/knowledge_base/kb_doc_api.py
index 927c8a6..ead1718 100644
--- a/server/knowledge_base/kb_doc_api.py
+++ b/server/knowledge_base/kb_doc_api.py
@@ -84,14 +84,14 @@ def search_content(
         query: str = Body("", description="用户输入", examples=["国网安徽信通准入手续"]),
         knowledge_base_name: str = Body(..., description="知识库名称", examples=["samples"]),
         top_k: int = Body(2, description="匹配文档数"),
-        )-> List[Document]:
+        )-> List[DocumentWithVSId]:
     print("kb_doc_api search_content")
     docs=[]
     kb = KBServiceFactory.get_service_by_name(knowledge_base_name)
     if kb is not None:
         if query:
             docs = kb.search_content(query, top_k)
-            print(f"search_content, docs:{docs}")
+            #print(f"search_content, docs:{docs}")
             return docs
     return docs
 
diff --git a/server/knowledge_base/kb_service/base.py b/server/knowledge_base/kb_service/base.py
index 248b9ba..f60a44f 100644
--- a/server/knowledge_base/kb_service/base.py
+++ b/server/knowledge_base/kb_service/base.py
@@ -119,6 +119,9 @@ class KBService(ABC):
         if docs:
             # 将 metadata["source"] 改为相对路径
             for doc in docs:
+                #增加时间，added by weiweiwang 2024.3.6
+                from datetime import datetime 
+                doc.metadata["updatetime"] = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
                 try:
                     source = doc.metadata.get("source", "")
                     if os.path.isabs(source):
@@ -188,7 +191,7 @@ class KBService(ABC):
     def search_content(self,
                     query: str,
                     top_k: int,
-                    )->List[Document]:
+                    )->List[DocumentWithVSId]:
         print("KBService search_content")
         docs = self.searchbyContent(query,top_k)
         return docs
@@ -282,7 +285,7 @@ class KBService(ABC):
     def searchbyContent(self,
                     query: str,
                     top_k: int,
-                    )->List[Document]:
+                    )->List[DocumentWithVSId]:
         """
         搜索知识库子类实自己逻辑
         """
diff --git a/server/knowledge_base/kb_service/es_kb_service.py b/server/knowledge_base/kb_service/es_kb_service.py
index 22ced1d..9013019 100644
--- a/server/knowledge_base/kb_service/es_kb_service.py
+++ b/server/knowledge_base/kb_service/es_kb_service.py
@@ -11,6 +11,7 @@ from server.utils import load_local_embeddings
 from elasticsearch import Elasticsearch,BadRequestError
 from configs import logger
 from configs import kbs_config
+from server.knowledge_base.model.kb_document_model import DocumentWithVSId
 
 class ESKBService(KBService):
 
@@ -171,24 +172,29 @@ class ESKBService(KBService):
 
     def searchbyContent(self, query:str, top_k: int = 2):
         if self.es_client_python.indices.exists(index=self.index_name):
-            print(f"******ESKBService searchByContent {self.index_name}")
+            print(f"******ESKBService searchByContent {self.index_name},query:{query}")
             tem_query = {
                 "query": {"match": {
                         "context": "*" + query + "*"
-                    }}
+                    }},
+                "highlight":{"fields":{
+                        "context":{}
+                        }}
                 }
             search_results = self.es_client_python.search(index=self.index_name, body=tem_query, size=top_k)
             hits = [hit for hit in search_results["hits"]["hits"]]
-            docs_and_scores = [
-                (
-                    Document(
-                        page_content=hit["_source"]["context"],
-                        metadata=hit["_source"]["metadata"],
-                    )
-                )
-                for hit in hits
-            ]
 
+            docs_and_scores = []
+            for hit in hits:
+                highlighted_contexts = ""
+                if 'highlight' in hit:
+                    highlighted_contexts = " ".join(hit['highlight']['context'])
+                    #print(f"******searchByContent highlighted_contexts:{highlighted_contexts}")
+                docs_and_scores.append(DocumentWithVSId(
+                        page_content=highlighted_contexts,
+                        metadata=hit["_source"]["metadata"],
+                        id = hit["_id"],
+                    ))
             return docs_and_scores
         
     def del_doc_by_ids(self, ids: List[str]) -> bool: