diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java
index 57230ee65ba220a5397a9f909b9bae7abe1fe4a5..294544ed4742205f1aaae61a52f1a42c02bec030 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBConnection.java
@@ -52,7 +52,6 @@ public class TSDBConnection implements Connection {
 
     public TSDBConnection(Properties info, TSDBDatabaseMetaData meta) throws SQLException {
         this.dbMetaData = meta;
-
         connect(info.getProperty(TSDBDriver.PROPERTY_KEY_HOST),
                 Integer.parseInt(info.getProperty(TSDBDriver.PROPERTY_KEY_PORT, "0")),
                 info.getProperty(TSDBDriver.PROPERTY_KEY_DBNAME), info.getProperty(TSDBDriver.PROPERTY_KEY_USER),
diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java
index d5f8510320f553af960f7ac91971de578792999b..63c42ca399b6098a5fa8c34d6fafeb51bdc8f588 100755
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java
@@ -168,13 +168,6 @@ public class TSDBDriver implements java.sql.Driver {
         }
 
         try {
-
-            Enumeration<?> propertyNames = props.propertyNames();
-            while (propertyNames.hasMoreElements()) {
-                Object name = propertyNames.nextElement();
-                System.out.println(name + " : " + props.get(name));
-            }
-
             TSDBJNIConnector.init((String) props.get(PROPERTY_KEY_CONFIG_DIR),
                     (String) props.get(PROPERTY_KEY_LOCALE),
                     (String) props.get(PROPERTY_KEY_CHARSET),
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDriverTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDriverTest.java
index d254b242afd2cff611be31df6312b033547ccda3..e7425a15695cf91cfc125d586110cb581fc2e8d9 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDriverTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDriverTest.java
@@ -113,13 +113,6 @@ public class TSDBDriverTest {
                 conn = DriverManager.getConnection(jdbcUrl, connProps);
                 assertNotNull("failure - connection should not be null", conn);
             }
-            printRs();
-            Properties clientInfo = conn.getClientInfo();
-            Enumeration<?> propertyNames = clientInfo.propertyNames();
-            while (propertyNames.hasMoreElements()) {
-                String name = (String) propertyNames.nextElement();
-                System.out.println(name + " : " + clientInfo.getProperty(name));
-            }
         } catch (SQLException e) {
             e.printStackTrace();
             fail("failure - should not throw Exception");