diff --git a/python/paddle/v2/framework/framework.py b/python/paddle/v2/framework/framework.py
index 10e5726a85f435b08997083094223ac2a0a15b61..01cd9982dc1c8d9869e59c55d0061abef91919ef 100644
--- a/python/paddle/v2/framework/framework.py
+++ b/python/paddle/v2/framework/framework.py
@@ -176,6 +176,18 @@ class Operator(object):
         proto = OpProtoHolder.instance().get_op_proto(type)
 
         if inputs is not None:
+            given = set()
+            need = set()
+            for n in inputs:
+                given.add(n)
+            for m in proto.inputs:
+                need.add(m.name)
+            if not given == need:
+                raise ValueError(
+                    "Incorrect setting for input(s) of operator \"%s\". Need: [%s] Given: [%s]"
+                    % (type, ", ".join(str(e) for e in need), ", ".join(
+                        str(e) for e in given)))
+
             for in_proto in proto.inputs:
                 in_argus = inputs[in_proto.name]
                 if not isinstance(in_argus, list):
@@ -190,6 +202,18 @@ class Operator(object):
                 self.desc.set_input(in_proto.name, in_argu_names)
 
         if outputs is not None:
+            given = set()
+            need = set()
+            for n in outputs:
+                given.add(n)
+            for m in proto.outputs:
+                need.add(m.name)
+            if not given == need:
+                raise ValueError(
+                    "Incorrect setting for output(s) of operator \"%s\". Need: [%s] Given: [%s]"
+                    % (type, ", ".join(str(e) for e in need), ", ".join(
+                        str(e) for e in given)))
+
             for out_proto in proto.outputs:
                 out_argus = outputs[out_proto.name]
                 if not isinstance(out_argus, list):