diff --git a/paddle/contrib/float16/float16_transpiler.py b/paddle/contrib/float16/float16_transpiler.py
index 66e0345c299730c113ffbdc8dd3c1fa32f872f3d..8d95dc0591e1d6bd815cc697528191c2ee8c1cfe 100644
--- a/paddle/contrib/float16/float16_transpiler.py
+++ b/paddle/contrib/float16/float16_transpiler.py
@@ -102,8 +102,8 @@ class Float16Transpiler:
                 continue
             for input_arg in current_op.input_arg_names:
                 if input_arg in self.input_map:
-                    current_op.rename_input(input_arg,
-                                            self.input_map[input_arg])
+                    current_op._rename_input(input_arg,
+                                             self.input_map[input_arg])
 
     def _remove_unused_var(self):
         '''
@@ -187,7 +187,7 @@ class Float16Transpiler:
                     shape=var.shape,
                     persistable=var.persistable)
                 find_op(var)
-                var.op.rename_output(var_name, tmp_var_name)
+                var.op._rename_output(var_name, tmp_var_name)
                 self.block._insert_op(
                     i,
                     type="cast",
diff --git a/paddle/fluid/API.spec b/paddle/fluid/API.spec
index d3583cf894991624f537a4073f14aacc470aadd0..130558b09165dbe31f2062c2aebbab0a84d56b24 100644
--- a/paddle/fluid/API.spec
+++ b/paddle/fluid/API.spec
@@ -6,26 +6,9 @@ paddle.fluid.Program.global_block ArgSpec(args=['self'], varargs=None, keywords=
 paddle.fluid.Program.list_vars ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Program.parse_from_string ArgSpec(args=['binary_str'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Program.to_string ArgSpec(args=['self', 'throw_on_error', 'with_details'], varargs=None, keywords=None, defaults=(False,))
-paddle.fluid.Operator.__init__ ArgSpec(args=['self', 'block', 'desc', 'type', 'inputs', 'outputs', 'attrs'], varargs=None, keywords=None, defaults=(None, None, None, None))
-paddle.fluid.Operator.all_attrs ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.attr ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.attr_type ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.block_attr ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.block_attr_id ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.blocks_attr ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.blocks_attr_ids ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.has_attr ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.has_kernel ArgSpec(args=['self', 'op_type'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.input ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.output ArgSpec(args=['self', 'name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.rename_input ArgSpec(args=['self', 'old_name', 'new_name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.rename_output ArgSpec(args=['self', 'old_name', 'new_name'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.set_attr ArgSpec(args=['self', 'name', 'val'], varargs=None, keywords=None, defaults=None)
-paddle.fluid.Operator.to_string ArgSpec(args=['self', 'throw_on_error'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.default_startup_program ArgSpec(args=[], varargs=None, keywords=None, defaults=None)
 paddle.fluid.default_main_program ArgSpec(args=[], varargs=None, keywords=None, defaults=None)
 paddle.fluid.program_guard ArgSpec(args=[], varargs='args', keywords='kwds', defaults=None)
-paddle.fluid.get_var ArgSpec(args=['name', 'program'], varargs=None, keywords=None, defaults=(None,))
 paddle.fluid.name_scope ArgSpec(args=[], varargs='args', keywords='kwds', defaults=None)
 paddle.fluid.Executor.__init__ ArgSpec(args=['self', 'place'], varargs=None, keywords=None, defaults=None)
 paddle.fluid.Executor.close ArgSpec(args=['self'], varargs=None, keywords=None, defaults=None)
diff --git a/paddle/fluid/framework/ir/graph_traits.cc b/paddle/fluid/framework/ir/graph_traits.cc
index 8f548913e4e1d9d5bc5bdace8b92db9065cf3b5e..084a4ba2def87eaa8badb3ca2c39865c6e5cb981 100644
--- a/paddle/fluid/framework/ir/graph_traits.cc
+++ b/paddle/fluid/framework/ir/graph_traits.cc
@@ -14,6 +14,8 @@
 
 #include "paddle/fluid/framework/ir/graph_traits.h"
 
+#include <vector>
+
 namespace paddle {
 namespace framework {
 namespace ir {
diff --git a/paddle/fluid/pybind/protobuf.cc b/paddle/fluid/pybind/protobuf.cc
index 67501186d150171728194f23bc02d2c014848dd7..a5bc44122028c1191f511157bdde2e7c2d30c6aa 100644
--- a/paddle/fluid/pybind/protobuf.cc
+++ b/paddle/fluid/pybind/protobuf.cc
@@ -285,12 +285,12 @@ void BindOpDesc(pybind11::module *m) {
       .def("set_output", &pd::OpDesc::SetOutput)
       .def("input_arg_names", &pd::OpDesc::InputArgumentNames)
       .def("output_arg_names", &pd::OpDesc::OutputArgumentNames)
-      .def("rename_input", &pd::OpDesc::RenameInput)
-      .def("rename_output", &pd::OpDesc::RenameOutput)
+      .def("_rename_input", &pd::OpDesc::RenameInput)
+      .def("_rename_output", &pd::OpDesc::RenameOutput)
       .def("has_attr", &pd::OpDesc::HasAttr)
       .def("attr_type", &pd::OpDesc::GetAttrType)
       .def("attr_names", &pd::OpDesc::AttrNames)
-      .def("set_attr", &pd::OpDesc::SetAttr)
+      .def("_set_attr", &pd::OpDesc::SetAttr)
       .def("attr", &pd::OpDesc::GetAttr)
       .def("set_block_attr", &pd::OpDesc::SetBlockAttr)
       .def("set_blocks_attr", &pd::OpDesc::SetBlocksAttr)
@@ -300,8 +300,8 @@ void BindOpDesc(pybind11::module *m) {
              std::string ser(seriralized);
              self.SetAttr(name, ser);
            })
-      .def("block_attr_id", &pd::OpDesc::GetBlockAttrId)
-      .def("blocks_attr_ids", &pd::OpDesc::GetBlocksAttrIds)
+      .def("_block_attr_id", &pd::OpDesc::GetBlockAttrId)
+      .def("_blocks_attr_ids", &pd::OpDesc::GetBlocksAttrIds)
       .def("check_attrs", &pd::OpDesc::CheckAttrs)
       .def("infer_shape", &pd::OpDesc::InferShape)
       .def("infer_var_type", &pd::OpDesc::InferVarType)
diff --git a/python/paddle/fluid/backward.py b/python/paddle/fluid/backward.py
index 88eaae10dd55edcc7e811163acf17579eb32cbf1..17fe8dc3c8a28ad129e2d377820da95e8e7a02d9 100644
--- a/python/paddle/fluid/backward.py
+++ b/python/paddle/fluid/backward.py
@@ -38,8 +38,8 @@ def _rename_arg_(op_descs, old_name, new_name, begin_idx=None, end_idx=None):
         op_desc = op_descs[i]
         if isinstance(op_desc, tuple):
             op_desc = op_desc[0]
-        op_desc.rename_input(old_name, new_name)
-        op_desc.rename_output(old_name, new_name)
+        op_desc._rename_input(old_name, new_name)
+        op_desc._rename_output(old_name, new_name)
 
 
 def _create_op_desc_(op_type, inputs, outputs, attrs):
@@ -70,7 +70,7 @@ def _create_op_desc_(op_type, inputs, outputs, attrs):
         if isinstance(val, framework.Block):
             op_desc.set_block_attr(name, val.desc)
         else:
-            op_desc.set_attr(name, val)
+            op_desc._set_attr(name, val)
     return op_desc
 
 
@@ -346,7 +346,7 @@ def _append_backward_ops_(block,
         grad_sub_block_list = []
         # If the op has its own sub-block, deal with the sub-block first
         if op.has_attr("sub_block"):
-            sub_block = program.block(op.block_attr_id("sub_block"))
+            sub_block = program.block(op._block_attr_id("sub_block"))
             grad_sub_block = program._create_block()
             grad_sub_block._set_forward_block_idx(sub_block.idx)
             cb = _callback_lookup_(op)
@@ -382,7 +382,7 @@ def _append_backward_ops_(block,
     for op_desc in grad_op_descs:
         new_op_desc = target_block.desc.append_op()
         new_op_desc.copy_from(op_desc)
-        new_op_desc.set_attr(op_role_attr_name, backward)
+        new_op_desc._set_attr(op_role_attr_name, backward)
         grad_to_var["__current_op_desc__"] = new_op_desc
         if callbacks is not None:
             assert (isinstance(callbacks, list))
@@ -408,7 +408,7 @@ def _append_backward_vars_(block, start_op_idx, grad_to_var, grad_info_map):
     for op_idx in range(start_op_idx, block.desc.op_size()):
         op_desc = block.desc.op(op_idx)
         if op_desc.has_attr("sub_block"):
-            sub_block = block.program.block(op_desc.block_attr_id("sub_block"))
+            sub_block = block.program.block(op_desc._block_attr_id("sub_block"))
             _append_backward_vars_(sub_block, 0, grad_to_var, grad_info_map)
         new_vars = set()
         # create new gradient variables
@@ -438,12 +438,12 @@ def _rename_grad_(block, start_op_idx, grad_to_var, target_grad_map):
         op_desc = block.desc.op(op_idx)
         for name in op_desc.input_arg_names():
             if name in var_map:
-                op_desc.rename_input(name, var_map[name])
+                op_desc._rename_input(name, var_map[name])
 
         for name in op_desc.output_arg_names():
             if block.desc.find_var(name.encode("ascii")):
                 new_name = unique_name.generate(name)
-                op_desc.rename_output(name, new_name)
+                op_desc._rename_output(name, new_name)
                 var_map[name] = new_name
 
     for g, ng in six.iteritems(var_map):
@@ -542,9 +542,9 @@ def append_backward(loss, parameter_list=None, no_grad_set=None,
         if loss.op is None:
             raise ValueError("loss.op is None. Should not happend")
 
-    loss.op.set_attr(core.op_proto_and_checker_maker.kOpRoleAttrName(),
-                     int(core.op_proto_and_checker_maker.OpRole.Forward) |
-                     int(core.op_proto_and_checker_maker.OpRole.Loss))
+    loss.op._set_attr(core.op_proto_and_checker_maker.kOpRoleAttrName(),
+                      int(core.op_proto_and_checker_maker.OpRole.Forward) |
+                      int(core.op_proto_and_checker_maker.OpRole.Loss))
 
     if callbacks is not None:
         isinstance(callbacks, list)
@@ -631,7 +631,7 @@ def append_backward(loss, parameter_list=None, no_grad_set=None,
         attr_val = [p.name, g.name]
         if g.op.has_attr(op_role_var_attr_name):
             attr_val.extend(g.op.attr(op_role_var_attr_name))
-        g.op.set_attr(op_role_var_attr_name, attr_val)
+        g.op._set_attr(op_role_var_attr_name, attr_val)
 
     return params_and_grads
 
diff --git a/python/paddle/fluid/clip.py b/python/paddle/fluid/clip.py
index 32b8f1189fd65ba1e8da5aeaf316fc0ae05af552..e884185528282021fd16289ccc6a3533e22b9967 100644
--- a/python/paddle/fluid/clip.py
+++ b/python/paddle/fluid/clip.py
@@ -75,8 +75,8 @@ class ErrorClipByValue(BaseErrorClipAttr):
         clip_op_desc.set_type("clip")
         clip_op_desc.set_input("X", [grad_name])
         clip_op_desc.set_output("Out", [grad_name])
-        clip_op_desc.set_attr("min", self.min)
-        clip_op_desc.set_attr("max", self.max)
+        clip_op_desc._set_attr("min", self.min)
+        clip_op_desc._set_attr("max", self.max)
 
 
 def error_clip_callback(block, context):
diff --git a/python/paddle/fluid/framework.py b/python/paddle/fluid/framework.py
index fc61bcbea66de07350ee778abb16e81f8f8bc8db..7ece6a7fafa91b24b03feeabb2bbefa0d3a1b24b 100644
--- a/python/paddle/fluid/framework.py
+++ b/python/paddle/fluid/framework.py
@@ -37,11 +37,9 @@ from . import unique_name
 
 __all__ = [
     'Program',
-    'Operator',
     'default_startup_program',
     'default_main_program',
     'program_guard',
-    'get_var',
     'name_scope',
 ]
 
@@ -654,11 +652,11 @@ class Operator(object):
                 self._update_desc_attr(attr_name, attr_val)
 
         self.desc.check_attrs()
-        if self.has_kernel(type):
+        if self._has_kernel(type):
             self.desc.infer_var_type(self.block.desc)
             self.desc.infer_shape(self.block.desc)
 
-    def has_kernel(self, op_type):
+    def _has_kernel(self, op_type):
         return op_type not in self.OP_WITHOUT_KERNEL_SET
 
     def to_string(self, throw_on_error):
@@ -699,7 +697,7 @@ class Operator(object):
         """
         return self.desc.input(name)
 
-    def rename_input(self, old_name, new_name):
+    def _rename_input(self, old_name, new_name):
         """
         Rename the `old_name` to `new_name`.
 
@@ -710,9 +708,9 @@ class Operator(object):
         Returns:
             None
         """
-        self.desc.rename_input(old_name, new_name)
+        self.desc._rename_input(old_name, new_name)
 
-    def rename_output(self, old_name, new_name):
+    def _rename_output(self, old_name, new_name):
         """
         Rename the `old_name` to `new_name`.
 
@@ -723,7 +721,7 @@ class Operator(object):
         Returns:
             None
         """
-        self.desc.rename_output(old_name, new_name)
+        self.desc._rename_output(old_name, new_name)
 
     @property
     def input_names(self):
@@ -787,7 +785,7 @@ class Operator(object):
         """
         return self.desc.attr_type(name)
 
-    def set_attr(self, name, val):
+    def _set_attr(self, name, val):
         """
         Set the value of attribute by attribute's name.
 
@@ -820,7 +818,7 @@ class Operator(object):
                 isinstance(val, core.ProgramDesc):
             self.desc.set_serialized_attr(name, val.serialize_to_string())
         else:
-            self.desc.set_attr(name, val)
+            self.desc._set_attr(name, val)
 
     @property
     def attr_names(self):
@@ -839,7 +837,7 @@ class Operator(object):
         """
         return self.desc.attr(name)
 
-    def block_attr_id(self, name):
+    def _block_attr_id(self, name):
         """
         Get the block attribute's id by name.
 
@@ -849,9 +847,9 @@ class Operator(object):
         Returns:
             int: the block index.
         """
-        return self.desc.block_attr_id(name)
+        return self.desc._block_attr_id(name)
 
-    def block_attr(self, name):
+    def _block_attr(self, name):
         """
         Get the block attribute  by name.
 
@@ -862,11 +860,11 @@ class Operator(object):
             block: the block attribute.
         """
 
-        id = self.block_attr_id(name)
+        id = self._block_attr_id(name)
         assert (id >= 0 and id < len(self.block.program.blocks))
         return self.block.program.blocks[id]
 
-    def blocks_attr(self, name):
+    def _blocks_attr(self, name):
         """
         Get the blocks attribute  by name.
 
@@ -877,13 +875,13 @@ class Operator(object):
             list: list of the blocks attribute.
         """
         attrs = []
-        for i in self.blocks_attr_ids(name):
+        for i in self._blocks_attr_ids(name):
             assert (i >= 0 and i < len(self.block.program.blocks))
             attrs.append(self.block.program.blocks[i])
 
         return attrs
 
-    def blocks_attr_ids(self, name):
+    def _blocks_attr_ids(self, name):
         """
         Get the blocks attribute's ids by name.
 
@@ -894,7 +892,7 @@ class Operator(object):
             list: list of the blocks ids.
         """
 
-        return self.desc.blocks_attr_ids(name)
+        return self.desc._blocks_attr_ids(name)
 
     def all_attrs(self):
         """
@@ -908,11 +906,11 @@ class Operator(object):
         for n in attr_names:
             attr_type = self.desc.attr_type(n)
             if attr_type == core.AttrType.BLOCK:
-                attr_map[n] = self.block_attr(n)
+                attr_map[n] = self._block_attr(n)
                 continue
 
             if attr_type == core.AttrType.BLOCKS:
-                attr_map[n] = self.blocks_attr(n)
+                attr_map[n] = self._blocks_attr(n)
                 continue
 
             attr_map[n] = self.attr(n)
@@ -1786,7 +1784,7 @@ class Program(object):
             for j in six.moves.range(block.op_size()):
                 op = block.op(j)
                 if op.has_attr('is_test'):
-                    op.set_attr('is_test', True)
+                    op._set_attr('is_test', True)
         res.blocks = [
             Block(res, i) for i in six.moves.range(res.desc.num_blocks())
         ]
@@ -2160,7 +2158,7 @@ def program_guard(main_program, startup_program=None):
         switch_startup_program(startup_program)
 
 
-def get_var(name, program=None):
+def _get_var(name, program=None):
     """
     Get a variable by name from the global block of a program.
 
diff --git a/python/paddle/fluid/tests/unittests/dist_transformer.py b/python/paddle/fluid/tests/unittests/dist_transformer.py
index 175bd130e5a8324227953eeeb769474e78f94fd2..f53f7f3b354e60619b17d601ff3f55d2b8b059db 100644
--- a/python/paddle/fluid/tests/unittests/dist_transformer.py
+++ b/python/paddle/fluid/tests/unittests/dist_transformer.py
@@ -1488,7 +1488,7 @@ def wrap_decoder(trg_vocab_size,
     if weight_sharing:
         predict = layers.matmul(
             x=dec_output,
-            y=fluid.get_var(word_emb_param_names[0]),
+            y=fluid.framework._get_var(word_emb_param_names[0]),
             transpose_y=True)
     else:
         predict = layers.fc(input=dec_output,
diff --git a/python/paddle/fluid/tests/unittests/test_infer_shape.py b/python/paddle/fluid/tests/unittests/test_infer_shape.py
index a3d700aad8236fea7bb0e6d043323ad3bd0851f2..fdff22cacc28731a91ff4fd17407bd9edbdd9d8b 100644
--- a/python/paddle/fluid/tests/unittests/test_infer_shape.py
+++ b/python/paddle/fluid/tests/unittests/test_infer_shape.py
@@ -76,8 +76,8 @@ class TestInferShape(unittest.TestCase):
         mul_op_desc.set_input("X", ["x"])
         mul_op_desc.set_input("Y", ["y"])
         mul_op_desc.set_output("Out", ["out"])
-        mul_op_desc.set_attr("x_num_col_dims", 1)
-        mul_op_desc.set_attr("y_num_col_dims", 1)
+        mul_op_desc._set_attr("x_num_col_dims", 1)
+        mul_op_desc._set_attr("y_num_col_dims", 1)
 
         mul_op_desc.check_attrs()
         mul_op_desc.infer_shape(block)
diff --git a/python/paddle/fluid/tests/unittests/test_protobuf_descs.py b/python/paddle/fluid/tests/unittests/test_protobuf_descs.py
index d24b5cbd06ddf9f332c1369ebd513bef27b77e14..7fb2171f611adea434d6f2710465810fb69d6979 100644
--- a/python/paddle/fluid/tests/unittests/test_protobuf_descs.py
+++ b/python/paddle/fluid/tests/unittests/test_protobuf_descs.py
@@ -38,40 +38,40 @@ class TestOpDesc(unittest.TestCase):
         self.assertEqual(['z'], op.output("Out"))
         self.assertEqual(["Out"], op.output_names())
 
-        op.set_attr("int_attr", 1)
+        op._set_attr("int_attr", 1)
         self.assertEqual(1, op.attr("int_attr"))
         self.assertTrue(op.has_attr("int_attr"))
         self.assertEqual(core.AttrType.INT, op.attr_type("int_attr"))
 
-        op.set_attr("float_attr", -1.32)
+        op._set_attr("float_attr", -1.32)
         self.assertAlmostEqual(-1.32, op.attr("float_attr"), delta=1e-4)
         self.assertTrue(op.has_attr("float_attr"))
 
-        op.set_attr("bool_attr", False)
+        op._set_attr("bool_attr", False)
         self.assertFalse(op.attr("bool_attr"))
 
-        op.set_attr("string_attr", "abc")
+        op._set_attr("string_attr", "abc")
         self.assertEqual("abc", op.attr("string_attr"))
         self.assertTrue(op.has_attr("string_attr"))
 
-        op.set_attr("ints_attr", [1, 2, 3])
+        op._set_attr("ints_attr", [1, 2, 3])
         self.assertEqual([1, 2, 3], op.attr("ints_attr"))
 
         expected = [1.2, 2.3, 3.4]
-        op.set_attr("floats_attr", expected)
+        op._set_attr("floats_attr", expected)
         for e, a in zip(expected, op.attr("floats_attr")):
             self.assertAlmostEqual(e, a, delta=1e-4)
 
-        op.set_attr("strings_attr", ["a", "b", "c"])
+        op._set_attr("strings_attr", ["a", "b", "c"])
         self.assertEqual(["a", "b", "c"], op.attr("strings_attr"))
 
-        op.set_attr("bools_attr", [True, False, True])
+        op._set_attr("bools_attr", [True, False, True])
         self.assertEqual([True, False, True], op.attr("bools_attr"))
 
         self.assertEqual(8, len(op.attr_names()))
 
-        op.set_block_attr("block_attr", program_desc.block(0))
-        self.assertEqual(0, op.block_attr_id("block_attr"))
+        op.set_block_attr("_block_attr", program_desc.block(0))
+        self.assertEqual(0, op._block_attr_id("_block_attr"))
 
         mul_op = block.append_op()
         mul_op.set_type("mul")
diff --git a/python/paddle/fluid/transpiler/details/program_utils.py b/python/paddle/fluid/transpiler/details/program_utils.py
index 59899e7e9ab98f661699d5ac0645c92bd23a1512..391d6aa12bdd70b9ef988898bee8e86cd0a0d765 100644
--- a/python/paddle/fluid/transpiler/details/program_utils.py
+++ b/python/paddle/fluid/transpiler/details/program_utils.py
@@ -128,7 +128,7 @@ def op_to_code(op):
         attr_type = op.desc.attr_type(name)
         if attr_type == core.AttrType.BLOCK:
             a = "{name} = block[{value}]".format(
-                name=name, type=attr_type, value=op.block_attr_id(name))
+                name=name, type=attr_type, value=op._block_attr_id(name))
             attrs_str += a
             if i != len(attr_names) - 1:
                 attrs_str += ", "
@@ -136,7 +136,7 @@ def op_to_code(op):
 
         if attr_type == core.AttrType.BLOCKS:
             a = "{name} = blocks{value}".format(
-                name=name, type=attr_type, value=op.blocks_attr_ids(name))
+                name=name, type=attr_type, value=op._blocks_attr_ids(name))
             attrs_str += a
             if i != len(attr_names) - 1:
                 attrs_str += ", "
diff --git a/python/paddle/fluid/transpiler/distribute_transpiler.py b/python/paddle/fluid/transpiler/distribute_transpiler.py
index 43071def7a906e585909e50e4c0c52c56d981cde..d9cc709f7428abcf415fe9a27b0d48a157ed0b41 100644
--- a/python/paddle/fluid/transpiler/distribute_transpiler.py
+++ b/python/paddle/fluid/transpiler/distribute_transpiler.py
@@ -668,7 +668,7 @@ in a single call.")
                 __clone_lr_op_sub_block__(cloned_op, program, new_sub_block)
 
             # reset the block of op
-            op.set_attr('sub_block', new_sub_block)
+            op._set_attr('sub_block', new_sub_block)
 
         # append lr decay ops to the child block if exists
         lr_ops = self._get_lr_ops()
@@ -864,7 +864,7 @@ to transpile() call.")
                 if op.type in [
                         "gaussian_random", "fill_constant", "uniform_random"
                 ]:
-                    op.set_attr("shape", list(new_outputs["Out"].shape))
+                    op._set_attr("shape", list(new_outputs["Out"].shape))
                 s_prog.global_block().append_op(
                     type=op.type,
                     inputs=new_inputs,
diff --git a/python/paddle/fluid/transpiler/inference_transpiler.py b/python/paddle/fluid/transpiler/inference_transpiler.py
index 49ba2cfd55bc881ed753fcefbd41f5b8fd4ebaf7..43d51b03e81895d7322d9e28a9c40b6d7cc69206 100644
--- a/python/paddle/fluid/transpiler/inference_transpiler.py
+++ b/python/paddle/fluid/transpiler/inference_transpiler.py
@@ -163,7 +163,7 @@ class InferenceTranspiler(object):
                 next_op = self.block.ops[i + 1]
                 if next_op.type == 'relu':
                     # modify bnorm OP to include relu
-                    current_op.set_attr("fuse_with_relu", True)
+                    current_op._set_attr("fuse_with_relu", True)
                     # remove relu OP
                     self.block._remove_op(i + 1)
             i = i + 1
@@ -377,7 +377,7 @@ class InferenceTranspiler(object):
                 type=old_var.type,
                 dtype=old_var.dtype,
                 shape=old_var.shape)
-            op.rename_input(old_param_name, new_param_name)
+            op._rename_input(old_param_name, new_param_name)
             self.scope.var(new_param_name)
 
             tensor = self.scope.find_var(new_param_name).get_tensor()
@@ -463,8 +463,8 @@ class InferenceTranspiler(object):
             current_op = self.block.ops[i]
             for input_arg in current_op.input_arg_names:
                 if input_arg in self.input_map:
-                    current_op.rename_input(input_arg,
-                                            self.input_map[input_arg])
+                    current_op._rename_input(input_arg,
+                                             self.input_map[input_arg])
 
     def _remove_unused_var(self):
         '''