diff --git a/src/connector/jdbc/src/test/java/TestPreparedStatement.java b/src/connector/jdbc/src/test/java/TestPreparedStatement.java
index 4a8e03d3c148505908b2fb55ad99de92341591be..16dad40a3f4273d8aa68c7fd7598582d8f2edb59 100644
--- a/src/connector/jdbc/src/test/java/TestPreparedStatement.java
+++ b/src/connector/jdbc/src/test/java/TestPreparedStatement.java
@@ -12,8 +12,6 @@ public class TestPreparedStatement {
             Class.forName("com.taosdata.jdbc.TSDBDriver");
             Properties properties = new Properties();
             properties.setProperty(TSDBDriver.PROPERTY_KEY_HOST, "localhost");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
             connection = DriverManager.getConnection("jdbc:TAOS://localhost:0/", properties);
             String rawSql = "select * from test.log0601";
diff --git a/src/connector/jdbc/src/test/java/TestTSDBDatabaseMetaData.java b/src/connector/jdbc/src/test/java/TestTSDBDatabaseMetaData.java
index 401a4e0e7dc72b30b9b235ef0accd2e96901bc09..7e65bd114918ef967a12f642b5a0e4c7f871a4b5 100644
--- a/src/connector/jdbc/src/test/java/TestTSDBDatabaseMetaData.java
+++ b/src/connector/jdbc/src/test/java/TestTSDBDatabaseMetaData.java
@@ -13,8 +13,6 @@ public class TestTSDBDatabaseMetaData {
             Class.forName("com.taosdata.jdbc.TSDBDriver");
             Properties properties = new Properties();
             properties.setProperty(TSDBDriver.PROPERTY_KEY_HOST, "localhost");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-            properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
             connection = DriverManager.getConnection("jdbc:TAOS://localhost:0/", properties);
             dbMetaData = connection.getMetaData();
diff --git a/src/connector/jdbc/src/test/java/TestTSDBSubscribe.java b/src/connector/jdbc/src/test/java/TestTSDBSubscribe.java
index bd3dbc2c4b1147d9dd8f030a7175eab8ed513e39..faa073b5e97cb3f72e6e7502e32b2011804bc8b3 100644
--- a/src/connector/jdbc/src/test/java/TestTSDBSubscribe.java
+++ b/src/connector/jdbc/src/test/java/TestTSDBSubscribe.java
@@ -16,8 +16,6 @@ public class TestTSDBSubscribe {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         String cs = String.format("jdbc:TAOS://%s:0/%s", host, database);
         return (TSDBConnection)DriverManager.getConnection(cs, properties);
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/BatchInsertTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/BatchInsertTest.java
index e4187faafc5ddb423488d2e097fc37268493c924..47082c1ef1f643a6647db8ce2d59080333c61bb8 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/BatchInsertTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/BatchInsertTest.java
@@ -40,8 +40,6 @@ public class BatchInsertTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
                 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ConnectionTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ConnectionTest.java
index b7706e5199f646c4010772f754d311f36dc1a3bb..2196048cc3106d3441cfe742b37a4416b2bdc225 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ConnectionTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ConnectionTest.java
@@ -29,8 +29,6 @@ public class ConnectionTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java
index d4df8a33fe78876f65b3188426a275b24470f069..565e4098349c0378d6bcb12c33d3ad74f2f2a688 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/DatabaseMetaDataTest.java
@@ -26,8 +26,6 @@ public class DatabaseMetaDataTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/" , properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ImportTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ImportTest.java
index 664b53f8e244a2b0cf3956255e9299502cf59859..52ddc5d0ebef304f6830b5d44bdb6138a40035e1 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ImportTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ImportTest.java
@@ -28,8 +28,6 @@ public class ImportTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/PreparedStatementTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/PreparedStatementTest.java
index 4c10c5b9d9569087b9e0096d22f12eef61ef6a15..dff7b05e6d53d08250d897a37489a9b431d4193c 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/PreparedStatementTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/PreparedStatementTest.java
@@ -33,8 +33,6 @@ public class PreparedStatementTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ResultSetTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ResultSetTest.java
index a556e0df76d50e8a5e9a39738452f92d63e251c1..8067c547df148587766d87e204f5abad2bfb659d 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ResultSetTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/ResultSetTest.java
@@ -34,9 +34,6 @@ public class ResultSetTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
-
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SelectTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SelectTest.java
index 0992e407c6a83df41ef402fcc56c2e70319961a8..22b9d6a59d3a274db8baf460380c39b601c0c229 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SelectTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SelectTest.java
@@ -28,8 +28,6 @@ public class SelectTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/" , properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StableTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StableTest.java
index 183bcc5aa835df76f3fea32f5c5aa249489f8e78..29a27c798005d2aab36972ecda32168fbc816e03 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StableTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StableTest.java
@@ -31,8 +31,6 @@ public class StableTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/" , properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StatementTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StatementTest.java
index c7c54f198b93615f546407d2aeb28e83c2a5b26c..30c346ab62b7db6248838e6ee00ea9d5fda54b11 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StatementTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/StatementTest.java
@@ -30,8 +30,6 @@ public class StatementTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);
 
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java
index 960d6fc1091e226ff71b33f400cba403b15bee28..c6ca030ce82575aa803944468623630378d378ca 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/SubscribeTest.java
@@ -32,8 +32,6 @@ public class SubscribeTest extends BaseTest {
         properties.setProperty(TSDBDriver.PROPERTY_KEY_CHARSET, "UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_LOCALE, "en_US.UTF-8");
         properties.setProperty(TSDBDriver.PROPERTY_KEY_TIME_ZONE, "UTC-8");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_USER,"root");
-        properties.setProperty(TSDBDriver.PROPERTY_KEY_PASSWORD,"taosdata");
 
         connection = DriverManager.getConnection("jdbc:TAOS://" + host + ":0/", properties);