diff --git a/src/connector/python/linux/python3/taos/cinterface.py b/src/connector/python/linux/python3/taos/cinterface.py
index 7b8e9b08972e46c591f4525f57d39404996a56d1..409b3ba02b45407eb4783c6a3596bc5cbbe39c7e 100644
--- a/src/connector/python/linux/python3/taos/cinterface.py
+++ b/src/connector/python/linux/python3/taos/cinterface.py
@@ -225,7 +225,6 @@ class CTaosInterface(object):
 
         if connection.value == None:
             print('connect to TDengine failed')
-            raise ConnectionError("connect to TDengine failed")
             # sys.exit(1)
         #else:
         #    print('connect to TDengine success')
@@ -415,4 +414,4 @@ if __name__ == '__main__':
     print(data)
 
     cinter.freeResult(result)
-    cinter.close(conn)
\ No newline at end of file
+    cinter.close(conn)