diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/assert_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/assert_transformer.py
index 4d5076108cd31ad6c6cde811b49c6042f17a1c3f..3d5ca1c13681615eab0ad47acfb8c42147a12289 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/assert_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/assert_transformer.py
@@ -36,10 +36,8 @@ class AssertTransformer(gast.NodeTransformer):
         self.visit(self.root)
 
     def visit_Assert(self, node):
-        convert_assert_node = gast.parse(
-            '_jst.convert_assert({test}, {msg})'.format(
-                test=ast_to_source_code(node.test),
-                msg=ast_to_source_code(node.msg)
-                if node.msg else "")).body[0].value
+        convert_assert_node = gast.parse('_jst.Assert({test}, {msg})'.format(
+            test=ast_to_source_code(node.test),
+            msg=ast_to_source_code(node.msg) if node.msg else "")).body[0].value
 
         return gast.Expr(value=convert_assert_node)
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/call_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/call_transformer.py
index c16d1ff17f70718c8450f93f9c728da512072e9d..b14977ced1db57e2924a1e23f7729564d8035162 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/call_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/call_transformer.py
@@ -71,7 +71,7 @@ class CallTransformer(gast.NodeTransformer):
         if PDB_SET in func_str:
             return node
 
-        new_func_str = "_jst.convert_call({})".format(func_str)
+        new_func_str = "_jst.Call({})".format(func_str)
         new_func_ast = gast.parse(new_func_str).body[0].value
         node.func = new_func_ast
 
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/cast_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/cast_transformer.py
index bf7791c788ccf919c5ce73792854557a94361f27..3b2d9be99ff009a0368ff24cd38418040125c62a 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/cast_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/cast_transformer.py
@@ -39,8 +39,7 @@ class CastTransformer(gast.NodeTransformer):
         func_str = ast_to_source_code(node.func).strip()
         if func_str in self._castable_type and len(node.args) > 0:
             args_str = ast_to_source_code(node.args[0]).strip()
-            new_func_str = "_jst.convert_var_dtype({}, '{}')".format(
-                args_str, func_str)
+            new_func_str = "_jst.AsDtype({}, '{}')".format(args_str, func_str)
             new_node = gast.parse(new_func_str).body[0].value
             return new_node
 
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/ifelse_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/ifelse_transformer.py
index f4d19905975d95a79724b9d08cb95bc10a0cfdcc..1935629f54e865040900cb8eb934bfc3e86988d5 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/ifelse_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/ifelse_transformer.py
@@ -361,8 +361,8 @@ def parse_cond_return(parent_vars_dict, if_vars_dict, else_vars_dict,
         After transformed, q and z are created in parent scope. For example,
 
         x, y = 5, 10
-        q = paddle.jit.dy2static.data_layer_not_check(name='q', shape=[-1], dtype='float32')
-        z = paddle.jit.dy2static.data_layer_not_check(name='z', shape=[-1], dtype='float32')
+        q = paddle.jit.dy2static.UndefindVar('q')
+        z = paddle.jit.dy2static.UndefindVar('z')
 
         def true_func(x, y, q):
             x = x+1
@@ -647,7 +647,7 @@ def create_convert_ifelse_node(return_name_ids,
         false_func_source = false_func.name
 
     convert_ifelse_layer = gast.parse(
-        '_jst.convert_ifelse('
+        '_jst.IfElse('
         '{pred}, {true_fn}, {false_fn}, {get_args}, {set_args}, {return_name_ids})'
         .format(
             pred=ast_to_source_code(pred),
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/list_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/list_transformer.py
index 0951635162e5e6afdb4526e1b5233ee01b71c897..48fa9906828c032af2c1a3f70498a358daa01df1 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/list_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/list_transformer.py
@@ -252,7 +252,7 @@ class ListTransformer(gast.NodeTransformer):
         # 2. pop stmt for a list or dict if len(args_str) == 1
         # 3. pop stmt for a dict if len(args_str) == 2
         if len(args_str) <= 2:
-            new_pop_str = "_jst.convert_pop({}, {})"\
+            new_pop_str = "_jst.Pop({}, {})"\
                 .format(target_str, ",".join(args_str))
             new_pop_node = gast.parse(new_pop_str).body[0].value
             return new_pop_node
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/logical_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/logical_transformer.py
index 5cf8c610018ca7b5fe061d17295f9fd3b999588d..80f5bffe46d1bc0a4d48d6a7af55b35b0676bd6f 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/logical_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/logical_transformer.py
@@ -43,7 +43,7 @@ class LogicalTransformer(gast.NodeTransformer):
         a = x > 1 and y < 1
 
     Transformed code:
-        a = paddle.jit.dy2static.convert_logical_and(lambda:x>1, lambda:y<1)
+        a = _jst.And(lambda:x>1, lambda:y<1)
     """
 
     def __init__(self, wrapper_root):
@@ -57,7 +57,7 @@ class LogicalTransformer(gast.NodeTransformer):
         self.generic_visit(node)
         if isinstance(node.op, gast.Not):
             arg = ast_to_source_code(node.operand)
-            new_node_str = "_jst.convert_logical_not({})".format(arg)
+            new_node_str = "_jst.Not({})".format(arg)
             # NOTE: gast.parse returns Module(body=[expr(value=...)])
             new_node = gast.parse(new_node_str).body[0].value
             return new_node
@@ -66,9 +66,9 @@ class LogicalTransformer(gast.NodeTransformer):
     def visit_BoolOp(self, node):
         self.generic_visit(node)
         if isinstance(node.op, gast.And):
-            new_node = self._create_bool_op_node(node.values, 'and')
+            new_node = self._create_bool_op_node(node.values, 'And')
         elif isinstance(node.op, gast.Or):
-            new_node = self._create_bool_op_node(node.values, 'or')
+            new_node = self._create_bool_op_node(node.values, 'Or')
         else:
             raise TypeError(
                 "Only supports and/or syntax in control flow if statement.")
@@ -95,7 +95,7 @@ class LogicalTransformer(gast.NodeTransformer):
             nodes = [pre_logic_node] + [post_logic_node]
 
         args = [ast_to_source_code(child) for child in nodes]
-        new_node_str = "_jst.convert_logical_{}(lambda:{}, lambda:{})".format(
+        new_node_str = "_jst.{}(lambda:{}, lambda:{})".format(
             api_type, args[0], args[1])
         # NOTE: gast.parse return Module(body=[expr(...)])
         new_node = gast.parse(new_node_str).body[0].value
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/loop_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/loop_transformer.py
index fa401fa3e4bf8291107c62a57f0f10ab42d856da..832c502c0aa5cd582250dcf161ca3c243d931402 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/loop_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/loop_transformer.py
@@ -28,7 +28,7 @@ from paddle.fluid.dygraph.dygraph_to_static.utils import get_attribute_full_name
 from paddle.fluid.dygraph.dygraph_to_static.utils import ForLoopTuplePreTransformer
 from paddle.fluid.dygraph.dygraph_to_static.utils import ForNodeVisitor
 from paddle.fluid.dygraph.dygraph_to_static.utils import RenameTransformer
-from paddle.fluid.dygraph.dygraph_to_static.variable_trans_func import create_static_variable_gast_node
+from paddle.fluid.dygraph.dygraph_to_static.variable_trans_func import create_fill_constant_node
 
 __all__ = ['LoopTransformer', 'NameVisitor']
 
@@ -89,7 +89,7 @@ def create_while_nodes(condition_name, body_name, loop_var_names):
         else:
             assign_loop_var_names.append(name)
 
-    while_func_name = "_jst.convert_while_loop"
+    while_func_name = "_jst.While"
     while_node_str = "[{}] = {}({}, {}, [{}])".format(
         ",".join(assign_loop_var_names), while_func_name, condition_name,
         body_name, ",".join(loop_var_names))
@@ -672,7 +672,7 @@ class LoopTransformer(gast.NodeTransformer):
         # We need to create static variable for those variables
         for name in create_var_names:
             if "." not in name:
-                new_stmts.append(create_static_variable_gast_node(name))
+                new_stmts.append(create_fill_constant_node(name))
 
         # 4. append init statements
         new_stmts.extend(init_stmts)
@@ -756,7 +756,7 @@ class LoopTransformer(gast.NodeTransformer):
         # We need to create static variable for those variables
         for name in create_var_names:
             if "." not in name:
-                new_stmts.append(create_static_variable_gast_node(name))
+                new_stmts.append(create_fill_constant_node(name))
 
         condition_func_node = gast.FunctionDef(
             name=unique_name.generate(WHILE_CONDITION_PREFIX),
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/print_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/print_transformer.py
index f045d01c99bab018afa193ec00cc22106ec7d776..d7a889ad2fc9c641be3dfecfef7bf226e3e6f33f 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/print_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/print_transformer.py
@@ -50,5 +50,5 @@ class PrintTransformer(gast.NodeTransformer):
         return gast.Expr(value=convert_print_node)
 
     def _create_print_node(self, print_args):
-        convert_print_func = gast.parse('_jst.convert_print').body[0].value
+        convert_print_func = gast.parse('_jst.Print').body[0].value
         return gast.Call(func=convert_print_func, args=print_args, keywords=[])
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/tensor_shape_transformer.py b/python/paddle/fluid/dygraph/dygraph_to_static/tensor_shape_transformer.py
index 9c19b9fc257aace9126f0c1b35a185e26e43297a..b7a2087d1f24d893fa7af4ee45c6011f23bebf09 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/tensor_shape_transformer.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/tensor_shape_transformer.py
@@ -14,22 +14,16 @@
 
 from __future__ import print_function
 
-import copy
 from paddle.utils import gast
 
-from paddle.fluid import unique_name
 from paddle.fluid.dygraph.dygraph_to_static.utils import ast_to_source_code
-from paddle.fluid.dygraph.dygraph_to_static.utils import slice_is_num
-from paddle.fluid.dygraph.dygraph_to_static.utils import is_paddle_api
-from paddle.fluid.dygraph.dygraph_to_static.utils import SplitAssignTransformer
 from paddle.fluid.dygraph.dygraph_to_static.static_analysis import AstNodeWrapper
-from paddle.fluid.dygraph.dygraph_to_static.static_analysis import StaticAnalysisVisitor
 
 
 class TensorShapeTransformer(gast.NodeTransformer):
     """
     This class transforms variable.shape  into Static Graph Ast.
-    All 'xxx.shape' will be converted int '_jst.convert_shape(x)'.
+    All 'xxx.shape' will be converted int '_jst.Shape(x)'.
     """
 
     def __init__(self, wrapper_root):
@@ -48,7 +42,7 @@ class TensorShapeTransformer(gast.NodeTransformer):
             # NOTE(dev): we can deal with paddle.shape in this case, but it's
             # not pretty to modify into 'convert_shape(paddle)(x)[0]'.
             if args != 'paddle':
-                convert_shape_func = "_jst.convert_shape({})".format(args)
+                convert_shape_func = "_jst.Shape({})".format(args)
                 shape_node = gast.parse(convert_shape_func).body[0].value
                 return shape_node
         return node
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/utils.py b/python/paddle/fluid/dygraph/dygraph_to_static/utils.py
index 2df8169a3efe1b5ceefbb6ab0656104873d1e3ae..8dd11c06e463fe74aa3ee0bd7404eb7136aaca48 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/utils.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/utils.py
@@ -1178,7 +1178,7 @@ class ForNodeVisitor(object):
         else:
             iter_var_name = ast_to_source_code(self.iter_node).strip()
 
-        convert_len_node_source_str = '{} = _jst.convert_len({})'.format(
+        convert_len_node_source_str = '{} = _jst.Len({})'.format(
             self.iter_var_len_name, iter_var_name)
 
         convert_len_node = gast.parse(convert_len_node_source_str).body[0]
diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/variable_trans_func.py b/python/paddle/fluid/dygraph/dygraph_to_static/variable_trans_func.py
index e823813acaacbd974f36f51d85a5af63262fe0d1..92ef7a3f13d9bb86024299b871800a266680a420 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/variable_trans_func.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/variable_trans_func.py
@@ -23,57 +23,11 @@ from paddle.fluid.framework import Variable
 from paddle.fluid.layer_helper import LayerHelper
 
 __all__ = [
-    'create_bool_as_type', 'create_fill_constant_node',
-    'create_static_variable_gast_node', 'data_layer_not_check',
-    'to_static_variable', 'to_static_variable_gast_node', 'create_undefined_var'
+    'create_bool_as_type', 'create_fill_constant_node', 'to_static_variable',
+    'create_undefined_var'
 ]
 
 
-def data_layer_not_check(name, shape, dtype='float32', lod_level=0):
-    """
-    This function creates a Tensor on the global block. The created Tensor
-    doesn't check the dtype and the shape of feed data because dygraph input
-    data can be various-length. This API is used in translating dygraph into
-    static graph.
-
-     Note: 
-        The default :code:`stop_gradient` attribute of the Tensor created by
-        this API is true, which means the gradient won't be passed backward
-        through the data Tensor. Set :code:`var.stop_gradient = False` If
-        user would like to pass backward gradient.
-
-    Args:
-       name (str): The name/alias of the Tensor, see :ref:`api_guide_Name`
-           for more details.
-       shape (list|tuple): List|Tuple of integers declaring the shape. You can
-           set "None" at a dimension to indicate the dimension can be of any
-           size. For example, it is useful to set changeable batch size as "None" 
-       dtype (np.dtype|VarType|str, optional): The type of the data. Supported
-           dtype: bool, float16, float32, float64, int8, int16, int32, int64,
-           uint8. Default: float32
-       lod_level (int, optional): The LoD level of the LoDTensor. Usually users
-           don't have to set this value. For more details about when and how to
-           use LoD level, see :ref:`user_guide_lod_tensor` . Default: 0
-
-    Returns:
-        Tensor: The global Tensor that gives access to the data.
-    """
-    helper = LayerHelper('data', **locals())
-    shape = list(shape)
-    for i in six.moves.range(len(shape)):
-        if shape[i] is None:
-            shape[i] = -1
-
-    return helper.create_global_variable(name=name,
-                                         shape=shape,
-                                         dtype=dtype,
-                                         type=core.VarDesc.VarType.LOD_TENSOR,
-                                         stop_gradient=True,
-                                         lod_level=lod_level,
-                                         is_data=True,
-                                         need_check_feed=False)
-
-
 def create_undefined_var(name):
     func_code = "{} = _jst.UndefinedVar('{}')".format(name, name)
     return gast.parse(func_code).body[0]
@@ -85,18 +39,7 @@ def create_nonlocal_stmt_node(names):
     return gast.parse(func_code).body[0]
 
 
-def to_static_variable_gast_node(name):
-    func_code = "{} = _jst.to_static_variable({})".format(name, name)
-    return gast.parse(func_code).body[0]
-
-
-def create_static_variable_gast_node(name):
-    func_code = "{} = _jst.data_layer_not_check(name='{}', shape=[-1], dtype='float32')".format(
-        name, unique_name.generate(name))
-    return gast.parse(func_code).body[0]
-
-
-def create_fill_constant_node(name, value):
+def create_fill_constant_node(name, value=0):
     func_code = "{} = paddle.full(shape=[1], ".format(name)
     if isinstance(value, bool):
         func_code += "dtype='bool', fill_value={}, name='{}')".format(
@@ -121,7 +64,6 @@ def to_static_variable(x):
         return paddle.full(shape=[1], dtype='bool', fill_value=x)
     if isinstance(x, float):
         return paddle.full(shape=[1], dtype='float64', fill_value=x)
-
     if isinstance(x, six.integer_types):
         return paddle.full(shape=[1], dtype='int64', fill_value=x)
 
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/ifelse_simple_func.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/ifelse_simple_func.py
index b5ba4c89ee2e3c0d8b03a514b0ce169a9dcfcf32..34264cac8a1be6b54d4667741adaac0c52b29148 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/ifelse_simple_func.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/ifelse_simple_func.py
@@ -72,10 +72,8 @@ def dyfunc_with_if_else3(x):
     # The var is created only in one of If.body or If.orelse node, and it used as gast.Load firstly after gast.If node.
     # The transformed code:
     """
-    q = paddle.jit.dy2static.
-        data_layer_not_check(name='q', shape=[-1], dtype='float32')
-    z = paddle.jit.dy2static.
-            data_layer_not_check(name='z', shape=[-1], dtype='float32')
+    q = paddle.jit.dy2static.UndefinedVar('q')
+    z = paddle.jit.dy2static.UndefinedVar('z')
 
     def true_fn_0(q, x, y):
         x = x + 1
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_convert_call.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_convert_call.py
index 38746337ce3cd59346d414d4a46b6f47c7a4e017..136d2d37db800b3bc1e9ad0b1265e92401e0b1d2 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_convert_call.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_convert_call.py
@@ -266,7 +266,7 @@ class TestDynamicToStaticCode(unittest.TestCase):
         return get_source_code(self.answer_func)
 
     def _get_transformed_code(self):
-        transformed_func = _jst.convert_call(self.func)
+        transformed_func = _jst.Call(self.func)
         return get_source_code(transformed_func)
 
     def test_code(self):
@@ -289,7 +289,7 @@ class TestDynamicToStaticCode2(TestDynamicToStaticCode):
         class StaticCode():
 
             def func_convert_then_not_to_static(x):
-                y = _jst.convert_call(func_not_to_static)(x)
+                y = _jst.Call(func_not_to_static)(x)
                 return y
 
         self.answer_func = StaticCode.func_convert_then_not_to_static
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_list.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_list.py
index 55dff1c92bb208a8b0230b2aefa99fea1d7e9c39..f573960b5dba0a7c207bb8e427e812e85815352f 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_list.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_list.py
@@ -277,6 +277,7 @@ class TestListInWhileLoop(TestListWithoutControlFlow):
 
         with fluid.dygraph.guard():
             if to_static:
+                print(declarative(self.dygraph_func).code)
                 res = declarative(self.dygraph_func)(self.input, self.iter_num)
             else:
                 res = self.dygraph_func(self.input, self.iter_num)
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_program_translator.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_program_translator.py
index 75bac135424aae50c09937b5dcd5c54f9fec9b6f..41968278f7bc062268cfa1453bd02c36785d6193 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_program_translator.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_program_translator.py
@@ -90,7 +90,7 @@ class StaticCode1():
             x_v = x_v + 1
             return x_v
 
-        _jst.convert_ifelse(
+        _jst.IfElse(
             fluid.layers.mean(x_v)[0] > 5, true_fn_0, false_fn_0, get_args_0,
             set_args_0, ('x_v', ))
 
@@ -115,8 +115,8 @@ class StaticCode1():
             __return_value_0 = x_v
             return __return_value_0
 
-        _jst.convert_ifelse(label is not None, true_fn_1, false_fn_1,
-                            get_args_1, set_args_1, ('__return_value_0', ))
+        _jst.IfElse(label is not None, true_fn_1, false_fn_1, get_args_1,
+                    set_args_1, ('__return_value_0', ))
         return __return_value_0
 
 
@@ -147,7 +147,7 @@ class StaticCode2():
             x_v = x_v + 1
             return x_v
 
-        _jst.convert_ifelse(
+        _jst.IfElse(
             fluid.layers.mean(x_v)[0] > 5, true_fn_2, false_fn_2, get_args_2,
             set_args_2, ('x_v', ))
 
@@ -172,8 +172,8 @@ class StaticCode2():
             __return_value_1 = x_v
             return __return_value_1
 
-        _jst.convert_ifelse(label is not None, true_fn_3, false_fn_3,
-                            get_args_3, set_args_3, ('__return_value_1', ))
+        _jst.IfElse(label is not None, true_fn_3, false_fn_3, get_args_3,
+                    set_args_3, ('__return_value_1', ))
         return __return_value_1
 
 
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tensor_shape.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tensor_shape.py
index 54c7866503cb23e570510445a81d259142e490cb..9b1cde6dcc5e11c271979e9e3985ee8742cd28a6 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tensor_shape.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_tensor_shape.py
@@ -275,7 +275,6 @@ class TestTensorShapeBasic(unittest.TestCase):
         self.expected_slice_op_num = 0
 
     def _compute_op_num(self, program):
-        print(program)
         self.op_num = sum([len(block.ops) for block in program.blocks])
         self.shape_op_num = 0
         self.slice_op_num = 0
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_variable_trans_func.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_variable_trans_func.py
index 87379669714ba98373d87af31aaaef465a9391e8..4a064e91b24a99c907fe4d586a38b8d0c5583a5f 100644
--- a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_variable_trans_func.py
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_variable_trans_func.py
@@ -22,30 +22,6 @@ import paddle.fluid as fluid
 
 from paddle.fluid.dygraph.dygraph_to_static.utils import ast_to_source_code
 from paddle.fluid.dygraph.dygraph_to_static.variable_trans_func import create_fill_constant_node
-from paddle.fluid.dygraph.dygraph_to_static.variable_trans_func import data_layer_not_check
-
-
-class TestDataLayerNotCheck(unittest.TestCase):
-
-    def test_create_none_shape(self):
-        main_program = fluid.Program()
-        with fluid.program_guard(main_program):
-            d = data_layer_not_check(name="d", shape=(None, -1, 3))
-            self.assertEqual(d.shape, (-1, -1, 3))
-            self.assertEqual(d.name, "d")
-
-    def test_feed_mismatch_shape(self):
-        main_program = fluid.Program()
-        with fluid.program_guard(main_program):
-            d = data_layer_not_check(name="d", shape=(1, 2, 3))
-        feed_in_data = np.random.uniform(size=[1, 2, 4]).astype(np.float32)
-        place = fluid.CUDAPlace(
-            0) if fluid.is_compiled_with_cuda() else fluid.CPUPlace()
-        exe = fluid.Executor(place)
-        ret = exe.run(main_program,
-                      feed={d.name: feed_in_data},
-                      fetch_list=[d.name])
-        self.assertTrue(np.allclose(ret, feed_in_data))
 
 
 class TestVariableTransFunc(unittest.TestCase):
diff --git a/python/paddle/jit/dy2static/__init__.py b/python/paddle/jit/dy2static/__init__.py
index 7f20c00024e558f5076e956c965a587b3431e7b6..0a51a3e265ede56e0362b40f8cb289fe88178042 100644
--- a/python/paddle/jit/dy2static/__init__.py
+++ b/python/paddle/jit/dy2static/__init__.py
@@ -14,25 +14,21 @@
 
 from .base import saw
 from .base import UndefinedVar
-from .convert_call_func import convert_call  # noqa: F401
-from .convert_operators import cast_bool_if_necessary  # noqa: F401
-from .convert_operators import convert_assert  # noqa: F401
-from .convert_operators import convert_ifelse  # noqa: F401
-from .convert_operators import convert_len  # noqa: F401
-from .convert_operators import convert_logical_and  # noqa: F401
-from .convert_operators import convert_logical_not  # noqa: F401
-from .convert_operators import convert_logical_or  # noqa: F401
-from .convert_operators import convert_pop  # noqa: F401
-from .convert_operators import convert_print  # noqa: F401
-from .convert_operators import convert_shape_compare  # noqa: F401
-from .convert_operators import convert_var_dtype  # noqa: F401
-from .convert_operators import convert_shape  # noqa: F401
-from .convert_operators import convert_while_loop  # noqa: F401
+from .convert_operators import convert_logical_and as And  # noqa: F401
+from .convert_operators import convert_var_dtype as AsDtype  # noqa: F401
+from .convert_operators import convert_assert as Assert  # noqa: F401
+from .convert_call_func import convert_call as Call  # noqa: F401
+from .convert_operators import convert_ifelse as IfElse  # noqa: F401
+from .convert_operators import convert_len as Len  # noqa: F401
+from .convert_operators import convert_logical_not as Not  # noqa: F401
+from .convert_operators import convert_logical_or as Or  # noqa: F401
+from .convert_operators import convert_pop as Pop  # noqa: F401
+from .convert_operators import convert_print as Print  # noqa: F401
+from .convert_operators import convert_shape as Shape  # noqa: F401
+from .convert_operators import convert_while_loop as While  # noqa: F401
+
 from .variable_trans_func import create_bool_as_type  # noqa: F401
-from .variable_trans_func import create_fill_constant_node  # noqa: F401
-from .variable_trans_func import create_static_variable_gast_node  # noqa: F401
-from .variable_trans_func import data_layer_not_check  # noqa: F401
 from .variable_trans_func import to_static_variable  # noqa: F401
-from .variable_trans_func import to_static_variable_gast_node  # noqa: F401
+from .convert_operators import convert_shape_compare  # noqa: F401
 
 __all__ = []
diff --git a/python/paddle/jit/dy2static/variable_trans_func.py b/python/paddle/jit/dy2static/variable_trans_func.py
index 9ce2bc2da381655e65225397831faa228c613ca6..49a0d6a31e5914a5d166339e984171e981008abb 100644
--- a/python/paddle/jit/dy2static/variable_trans_func.py
+++ b/python/paddle/jit/dy2static/variable_trans_func.py
@@ -15,10 +15,6 @@
 from __future__ import print_function
 
 from ...fluid.dygraph.dygraph_to_static.variable_trans_func import create_bool_as_type  # noqa: F401
-from ...fluid.dygraph.dygraph_to_static.variable_trans_func import create_fill_constant_node  # noqa: F401
-from ...fluid.dygraph.dygraph_to_static.variable_trans_func import create_static_variable_gast_node  # noqa: F401
-from ...fluid.dygraph.dygraph_to_static.variable_trans_func import data_layer_not_check  # noqa: F401
 from ...fluid.dygraph.dygraph_to_static.variable_trans_func import to_static_variable  # noqa: F401
-from ...fluid.dygraph.dygraph_to_static.variable_trans_func import to_static_variable_gast_node  # noqa: F401
 
 __all__ = []