diff --git a/notion/notion-mcp-server.py b/notion/notion-mcp-server.py
index a0ee154..663243c 100644
--- a/notion/notion-mcp-server.py
+++ b/notion/notion-mcp-server.py
@@ -375,7 +375,7 @@ class NotionMCPHandler(BaseHTTPRequestHandler):
 
         # 获取 token
         tokens = get_tokens()
-        token_entry = tokens.get(user) if user else next(iter(tokens.values()), None)
+        token_entry = tokens.get(user) or tokens.get("default") or next(iter(tokens.values()), None)
         if not token_entry:
             json_response(self, 401, {
                 "ok": False,
@@ -448,7 +448,7 @@ class NotionMCPHandler(BaseHTTPRequestHandler):
             return
 
         tokens = get_tokens()
-        token_entry = tokens.get(user) if user else next(iter(tokens.values()), None)
+        token_entry = tokens.get(user) or tokens.get("default") or next(iter(tokens.values()), None)
         if not token_entry:
             json_response(self, 401, {
                 "ok": False,
@@ -496,7 +496,7 @@ class NotionMCPHandler(BaseHTTPRequestHandler):
             return
 
         tokens = get_tokens()
-        token_entry = tokens.get(user) if user else next(iter(tokens.values()), None)
+        token_entry = tokens.get(user) or tokens.get("default") or next(iter(tokens.values()), None)
         if not token_entry:
             json_response(self, 401, {"ok": False, "error": "用户尚未连接 Notion"})
             return
@@ -534,7 +534,7 @@ class NotionMCPHandler(BaseHTTPRequestHandler):
             return
 
         tokens = get_tokens()
-        token_entry = tokens.get(user) if user else next(iter(tokens.values()), None)
+        token_entry = tokens.get(user) or tokens.get("default") or next(iter(tokens.values()), None)
         if not token_entry:
             json_response(self, 401, {"ok": False, "error": "用户尚未连接 Notion"})
             return