diff --git a/.gitignore b/.gitignore
index 0af027c..1a7bbfd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ __pycache__/
 *.py[cod]
 *$py.class
 .vscode
+.DS_Store
 
 # C extensions
 *.so
diff --git a/milvus_cli/Connection.py b/milvus_cli/Connection.py
index d78976e..06dd34f 100644
--- a/milvus_cli/Connection.py
+++ b/milvus_cli/Connection.py
@@ -3,30 +3,25 @@
 from tabulate import tabulate
 
 class MilvusConnection(object):
-  host = "127.0.0.1"
-  port = 19530
+  uri = "127.0.0.1:19530"
   alias = "default"
 
   def connect(self,
           alias='',
-          host=None,
-          port=None,
-          secure=False,
+          uri=None,
           username=None,
           password=None):
     self.alias = alias
-    self.host = host
-    self.port = port
+    self.uri = uri
     trimUsername = None if username is None else username.strip()
     trimPwd = None if password is None else password.strip()
 
     try:
       res = connections.connect(alias= self.alias,
-                            host=self.host,
-                            port=self.port,
+                            uri=self.uri,
                             user=trimUsername,
-                            password=trimPwd,
-                            secure=secure)
+                            password=trimPwd
+                            )  
       return res
     except Exception as e:
         raise ConnectException(f"Connect to Milvus error!{str(e)}")
@@ -42,7 +37,7 @@ def checkConnection(self,alias=None):
   def showConnection(self, alias=None, showAll=False):
     tempAlias = alias if alias else self.alias
     allConnections = connections.list_connections()
-    
+
     if showAll:
         return tabulate(allConnections,
                         headers=["Alias"],
diff --git a/milvus_cli/Database.py b/milvus_cli/Database.py
index f95beab..b995165 100644
--- a/milvus_cli/Database.py
+++ b/milvus_cli/Database.py
@@ -7,8 +7,8 @@ class Database():
   def create_database(self,dbName=None,alias=None):
     tempAlias = alias if alias else self.alias
     try:
-      res = db.create_database(db_name=dbName,using=tempAlias)
-      print(res)
+      db.create_database(db_name=dbName,using=tempAlias)
+      return f"Create database {dbName} successfully!"
     except Exception as e:
       raise f"Create database error!{str(e)}"
     
@@ -16,7 +16,6 @@ def list_databases(self,alias=None):
     tempAlias = alias if alias else self.alias
     try:
       res = db.list_database(using=tempAlias)
-      print('----',res)
       return res
     except Exception as e:
       raise f"List database error!{str(e)}"
@@ -24,15 +23,15 @@ def list_databases(self,alias=None):
   def drop_database(self,dbName=None,alias=None):
     tempAlias = alias if alias else self.alias
     try:
-      res = db.drop_database(db_name=dbName,using=tempAlias)
-      print(res)
+      db.drop_database(db_name=dbName,using=tempAlias)
+      return f"Drop database {dbName} successfully!"
     except Exception as e:
       raise f"Drop database error!{str(e)}"
     
   def using_database(self,dbName=None,alias=None):
     tempAlias = alias if alias else self.alias
     try:
-      res = db.using_database(db_name=dbName,using=tempAlias)
-      print(res)
+      db.using_database(db_name=dbName,using=tempAlias)
+      return f"Using database {dbName} successfully!"
     except Exception as e:
       raise f"Using database error!{str(e)}"
\ No newline at end of file
diff --git a/milvus_cli/test/test_connection.py b/milvus_cli/test/test_connection.py
index fc61946..9498e9d 100644
--- a/milvus_cli/test/test_connection.py
+++ b/milvus_cli/test/test_connection.py
@@ -8,23 +8,22 @@
 sys.path.append(parentdir)
 from Connection import MilvusConnection
 
-defaultAddress = 'localhost'
-defaultPort = 19530
+uri = "http://localhost:19530"
 tempAlias = "zilliz"
 milvusConnection = MilvusConnection()
 
 class TestConnection(unittest.TestCase):
 
   def setUp(self):
-    milvusConnection.connect(host=defaultAddress,port=defaultPort,alias=tempAlias)
-    
+    milvusConnection.connect(uri=uri ,alias=tempAlias)
+
   def tearDown(self):
     milvusConnection.disconnect(alias=tempAlias)
 
   def test_show_connection(self):
     res = milvusConnection.showConnection(alias=tempAlias)
     expectRes = tabulate(
-            [["Address", f'{defaultAddress}:{defaultPort}'], ["User", ''], ["Alias", tempAlias]],
+            [["Address", f'localhost:19530'], ["User", ''], ["Alias", tempAlias]],
             tablefmt="pretty",
         )
     self.assertEqual(res, expectRes)
diff --git a/milvus_cli/test/test_database.py b/milvus_cli/test/test_database.py
index d1d1c0e..b6946ff 100644
--- a/milvus_cli/test/test_database.py
+++ b/milvus_cli/test/test_database.py
@@ -9,8 +9,7 @@
 from Connection import MilvusConnection
 from Database import Database
 
-defaultAddress = 'localhost'
-defaultPort = 19530
+uri = "http://localhost:19530"
 tempAlias = "zilliz"
 dbName="test_db"
 milvusConnection = MilvusConnection()
@@ -19,7 +18,7 @@
 class TestDatabase(unittest.TestCase):
 
   def setUp(self):
-    milvusConnection.connect(host=defaultAddress,port=defaultPort,alias=tempAlias)
+    milvusConnection.connect(uri=uri,alias=tempAlias)
     
   def tearDown(self):
     database.drop_database(dbName=dbName,alias=tempAlias)