diff --git a/python/paddle_serving_client/client.py b/python/paddle_serving_client/client.py
index 1def950ac30ff5d63782d629cbb7e123510100be..0ccdbb1435fbca1a9e576d1a5ad01517d4ed352d 100755
--- a/python/paddle_serving_client/client.py
+++ b/python/paddle_serving_client/client.py
@@ -410,7 +410,7 @@ class Client(object):
                                 key)])
                         else:
                             string_lod_slot_batch.append([])
-                    string_slot.append(np.ascontiguousarray(feed_i[key]))
+                    string_slot.append(feed_i[key])
                     self.has_numpy_input = True
             int_slot_batch.append(int_slot)
             int_lod_slot_batch.append(int_lod_slot)