diff --git a/example/ScanVertexEdgeExample.py b/example/ScanVertexEdgeExample.py
index 2366169c..ec2cf388 100644
--- a/example/ScanVertexEdgeExample.py
+++ b/example/ScanVertexEdgeExample.py
@@ -59,8 +59,9 @@ def scan_person_vertex(graph_storage_client):
     print("======== Scan vertexes in ScanSpace ======")
     while resp.has_next():
         result = resp.next()
-        for vertex_data in result:
-            print(vertex_data)
+        if result is not None:
+            for vertex_data in result:
+                print(vertex_data)
 
 
 def scan_person_edge(graph_storage_client):
@@ -70,8 +71,9 @@ def scan_person_edge(graph_storage_client):
     print("======== Scan edges in ScanSpace ======")
     while resp.has_next():
         result = resp.next()
-        for edge_data in result:
-            print(edge_data)
+        if result is not None:
+            for edge_data in result:
+                print(edge_data)
 
 
 """
@@ -129,6 +131,7 @@ def scan_person_edge(graph_storage_client):
             [("172.28.1.1", 9559), ("172.28.1.2", 9559), ("172.28.1.3", 9559)], 50000
         )
         graph_storage_client = GraphStorageClient(meta_cache)
+        graph_storage_client.set_user_passwd("root", "nebula")
         prepare_data()
         scan_person_vertex(graph_storage_client)
         scan_person_edge(graph_storage_client)
diff --git a/nebula3/sclient/GraphStorageClient.py b/nebula3/sclient/GraphStorageClient.py
index dbf6b888..c1e73c4a 100644
--- a/nebula3/sclient/GraphStorageClient.py
+++ b/nebula3/sclient/GraphStorageClient.py
@@ -34,6 +34,8 @@ class GraphStorageClient(object):
     DEFAULT_START_TIME = 0
     DEFAULT_END_TIME = sys.maxsize
     DEFAULT_LIMIT = 1000
+    user = ""
+    passwd = ""
 
     def __init__(self, meta_cache, storage_addrs=None, time_out=60000):
         self._meta_cache = meta_cache
@@ -42,6 +44,13 @@ def __init__(self, meta_cache, storage_addrs=None, time_out=60000):
         self._connections = []
         self._create_connection()
 
+    def set_user_passwd(self, user, passwd):
+        """set user and password for scan. only useful for enterprise
+        :return:
+        """
+        self.user = user
+        self.passwd = passwd
+
     def get_conns(self):
         """get all connections which connect to storaged, the ScanResult use it
 
@@ -225,6 +234,9 @@ def _scan_vertex(
         req.filter = where
         req.only_latest_version = only_latest_version
         req.enable_read_from_follower = enable_read_from_follower
+        req.username = self.user.encode('utf-8')
+        req.password = self.passwd.encode('utf-8')
+        req.need_authenticate = True
         return ScanResult(
             self,
             req=req,
@@ -368,6 +380,9 @@ def _scan_edge(
         req.filter = where
         req.only_latest_version = only_latest_version
         req.enable_read_from_follower = enable_read_from_follower
+        req.username = self.user.encode('utf-8')
+        req.password = self.passwd.encode('utf-8')
+        req.need_authenticate = True
         return ScanResult(
             self,
             req=req,
diff --git a/nebula3/storage/ttypes.py b/nebula3/storage/ttypes.py
index 331d3205..9dd5a5cb 100644
--- a/nebula3/storage/ttypes.py
+++ b/nebula3/storage/ttypes.py
@@ -5316,6 +5316,9 @@ class ScanVertexRequest:
    - only_latest_version
    - enable_read_from_follower
    - common
+   - username
+   - password
+   - need_authenticate
   """
 
   thrift_spec = None
@@ -5413,6 +5416,14 @@ def read(self, iprot):
         if ftype == TType.STRUCT:
           self.common = RequestCommon()
           self.common.read(iprot)
+      elif fid == 12:
+        if ftype == TType.STRING:
+          self.password = iprot.readString()
+        else:
+          iprot.skip(ftype)
+      elif fid == 13:
+        if ftype == TType.BOOL:
+          self.need_authenticate = iprot.readBool()
         else:
           iprot.skip(ftype)
       else:
@@ -5475,6 +5486,18 @@ def write(self, oprot):
       oprot.writeFieldBegin('common', TType.STRUCT, 10)
       self.common.write(oprot)
       oprot.writeFieldEnd()
+    if self.username != None:
+      oprot.writeFieldBegin('username', TType.STRING, 11)
+      oprot.writeString(self.username)
+      oprot.writeFieldEnd()
+    if self.password != None:
+      oprot.writeFieldBegin('password', TType.STRING, 12)
+      oprot.writeString(self.password)
+      oprot.writeFieldEnd()
+    if self.need_authenticate != None:
+      oprot.writeFieldBegin('need_authenticate', TType.BOOL, 13)
+      oprot.writeBool(self.need_authenticate)
+      oprot.writeFieldEnd()
     oprot.writeFieldStop()
     oprot.writeStructEnd()
 
@@ -5521,6 +5544,18 @@ def __repr__(self):
       value = pprint.pformat(self.common, indent=0)
       value = padding.join(value.splitlines(True))
       L.append('    common=%s' % (value))
+    if self.username is not None:
+      value = pprint.pformat(self.username, indent=0)
+      value = padding.join(value.splitlines(True))
+      L.append('    username=%s' % (value))
+    if self.password is not None:
+      value = pprint.pformat(self.password, indent=0)
+      value = padding.join(value.splitlines(True))
+      L.append('    password=%s' % (value))
+    if self.need_authenticate is not None:
+      value = pprint.pformat(self.need_authenticate, indent=0)
+      value = padding.join(value.splitlines(True))
+      L.append('    need_authenticate=%s' % (value))
     return "%s(%s)" % (self.__class__.__name__, "\n" + ",\n".join(L) if L else '')
 
   def __eq__(self, other):
@@ -5548,6 +5583,9 @@ class ScanEdgeRequest:
    - only_latest_version
    - enable_read_from_follower
    - common
+   - username
+   - password
+   - need_authenticate
   """
 
   thrift_spec = None
@@ -5647,6 +5685,21 @@ def read(self, iprot):
           self.common.read(iprot)
         else:
           iprot.skip(ftype)
+      elif fid == 11:
+        if ftype == TType.STRING:
+          self.username = iprot.readString()
+        else:
+          iprot.skip(ftype)
+      elif fid == 12:
+        if ftype == TType.STRING:
+          self.password = iprot.readString()
+        else:
+          iprot.skip(ftype)
+      elif fid == 13:
+        if ftype == TType.BOOL:
+          self.need_authenticate = iprot.readBool()
+        else:
+          iprot.skip(ftype)
       else:
         iprot.skip(ftype)
       iprot.readFieldEnd()
@@ -5707,6 +5760,18 @@ def write(self, oprot):
       oprot.writeFieldBegin('common', TType.STRUCT, 10)
       self.common.write(oprot)
       oprot.writeFieldEnd()
+    if self.username != None:
+      oprot.writeFieldBegin('username', TType.STRING, 11)
+      oprot.writeString(self.username)
+      oprot.writeFieldEnd()
+    if self.password != None:
+      oprot.writeFieldBegin('password', TType.STRING, 12)
+      oprot.writeString(self.password)
+      oprot.writeFieldEnd()
+    if self.need_authenticate != None:
+      oprot.writeFieldBegin('need_authenticate', TType.BOOL, 13)
+      oprot.writeBool(self.need_authenticate)
+      oprot.writeFieldEnd()
     oprot.writeFieldStop()
     oprot.writeStructEnd()
 
@@ -5753,6 +5818,18 @@ def __repr__(self):
       value = pprint.pformat(self.common, indent=0)
       value = padding.join(value.splitlines(True))
       L.append('    common=%s' % (value))
+    if self.username is not None:
+      value = pprint.pformat(self.username, indent=0)
+      value = padding.join(value.splitlines(True))
+      L.append('    username=%s' % (value))
+    if self.password is not None:
+      value = pprint.pformat(self.password, indent=0)
+      value = padding.join(value.splitlines(True))
+      L.append('    password=%s' % (value))
+    if self.need_authenticate is not None:
+      value = pprint.pformat(self.need_authenticate, indent=0)
+      value = padding.join(value.splitlines(True))
+      L.append('    need_authenticate=%s' % (value))
     return "%s(%s)" % (self.__class__.__name__, "\n" + ",\n".join(L) if L else '')
 
   def __eq__(self, other):