diff --git a/vnpy/trader/rqdata.py b/vnpy/trader/rqdata.py
index 87515e59..630a82f6 100644
--- a/vnpy/trader/rqdata.py
+++ b/vnpy/trader/rqdata.py
@@ -36,11 +36,15 @@ class RqdataClient:
         self.inited = False
         self.symbols = set()
 
-    def init(self):
+    def init(self, username="", password=""):
         """"""
         if self.inited:
             return True
 
+        if username and password:
+            self.username = username
+            self.password = password
+
         if not self.username or not self.password:
             return False