diff --git a/tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/TaosDemoCommandLineRunner.java b/tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/TaosDemoCommandLineRunner.java
index 6642ca8f36690e6e20fc77936dd22ccc5890353d..d40bc1b5bfede04ec24b38cd97dd9b45763ea834 100644
--- a/tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/TaosDemoCommandLineRunner.java
+++ b/tests/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/components/TaosDemoCommandLineRunner.java
@@ -48,8 +48,6 @@ public class TaosDemoCommandLineRunner implements CommandLineRunner {
             System.exit(0);
         }
 
-        DataSource dataSource = DataSourceFactory.getInstance(config.host, config.port, config.user, config.password);
-
         // 准备数据
         prepareMetaData(config);
         // 超级表的meta