diff --git a/kylinpy/exceptions.py b/kylinpy/exceptions.py
index e586ebe97..eb5a10150 100644
--- a/kylinpy/exceptions.py
+++ b/kylinpy/exceptions.py
@@ -25,30 +25,6 @@ class KylinQueryError(KylinError):
     """ Raise when Kylin query error """
 
 
-class KylinQueryPrestateError(KylinError):
-    """ Raise when Kylin query prestate error """
-
-
-class KylinCreateSavedQueryError(KylinError):
-    """ Raise when Kylin create saved query error """
-
-
-class KylinRemoveSavedQueryError(KylinError):
-    """ Raise when Kylin remove saved query error """
-
-
-class KylinGetSavedQueryError(KylinError):
-    """ Raise when Kylin get saved query error """
-
-
-class KylinGetRunningQueryError(KylinError):
-    """ Raise when Kylin get running query error """
-
-
-class KylinStopQueryError(KylinError):
-    """ Raise when Kylin stop query error """
-
-
 class KylinUnsupportedType(KylinError):
     """ Raise when unsupport type in Kylin """
 
diff --git a/kylinpy/service/kylin_service.py b/kylinpy/service/kylin_service.py
index d3af84299..73e3f809b 100644
--- a/kylinpy/service/kylin_service.py
+++ b/kylinpy/service/kylin_service.py
@@ -5,9 +5,7 @@
 from __future__ import unicode_literals
 
 from kylinpy.client import InternalServerError, UnauthorizedError
-from kylinpy.exceptions import KylinQueryError, KylinCubeError, KylinJobError, KylinQueryPrestateError, \
-    KylinCreateSavedQueryError, KylinRemoveSavedQueryError, KylinGetSavedQueryError, KylinGetRunningQueryError,\
-    KylinStopQueryError
+from kylinpy.exceptions import KylinQueryError, KylinCubeError, KylinJobError
 from ._service_interface import ServiceInterface
 
 
@@ -124,12 +122,7 @@ def query_prestate(self, sql, limit=0, offset=50000, acceptPartial=False, **kwar
             'sql': sql,
         }
         kwargs.setdefault('json', json_data)
-        try:
-            response = self.client.post('/query/prestate', **kwargs).json()
-        except InternalServerError as err:
-            raise KylinQueryPrestateError(err)
-
-        return response
+        return self.client.post('/query/prestate', **kwargs).json()
 
     def create_saved_queries(self, sql, name, desc=None, **kwargs):
         json_data = {
@@ -139,44 +132,19 @@ def create_saved_queries(self, sql, name, desc=None, **kwargs):
             'description': desc,
         }
         kwargs.setdefault('json', json_data)
-        try:
-            response = self.client.post('/saved_queries', **kwargs).json()
-        except InternalServerError as err:
-            raise KylinCreateSavedQueryError(err)
-
-        return response
+        return self.client.post('/saved_queries', **kwargs).json()
 
     def remove_saved_query(self, query_id):
-        try:
-            response = self.client.delete('/saved_queries/{}'.format(query_id)).json()
-        except InternalServerError as err:
-            raise KylinRemoveSavedQueryError(err)
-
-        return response
+        return self.client.delete('/saved_queries/{}'.format(query_id)).json()
 
     def get_saved_queries(self):
-        try:
-            response = self.client.get('/saved_queries').json()
-        except InternalServerError as err:
-            raise KylinGetSavedQueryError(err)
-
-        return response
+        return self.client.get('/saved_queries').json()
 
     def get_running_queries(self):
-        try:
-            response = self.client.get('/query/runningQueries').json()
-        except InternalServerError as err:
-            raise KylinGetRunningQueryError(err)
-
-        return response
+        return self.client.get('/query/runningQueries').json()
 
     def stop_query(self, query_id):
-        try:
-            response = self.client.get('/query/{}/stop'.format(query_id)).json()
-        except InternalServerError as err:
-            raise KylinStopQueryError(err)
-
-        return response
+        return self.client.get('/query/{}/stop'.format(query_id)).json()
 
     def projects(self, **kwargs):
         params = {