diff --git a/config/config.json b/config/config.json
index 43d53b94..7adce564 100644
--- a/config/config.json
+++ b/config/config.json
@@ -9,7 +9,6 @@
         ]
     },
     "memory_chat": {
-        "memory_user_name": "用户",
         "clazz": "chat.memory_chat",
         "retrieve": "parse_params,load_profile,extract_time,es_similar,es_keyword,semantic_rank,fuse_rerank",
         "generation_model": "dashscope_generation",
diff --git a/memory_scope/utils/logger.py b/memory_scope/utils/logger.py
index a1fc0cf7..828d0776 100644
--- a/memory_scope/utils/logger.py
+++ b/memory_scope/utils/logger.py
@@ -78,7 +78,8 @@ class Logger(logging.Logger):
                    func=None, extra=None, sinfo=None):
         if extra is None:
             extra = {}
-        extra["trace_id"] = self.trace_id
+        if self.trace_id:
+            extra["trace_id"] = self.trace_id
         return super().makeRecord(name, level, fn, lno, msg, args, exc_info, func, extra, sinfo)
 
     @classmethod