diff --git a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/detectionoutput.py b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/detectionoutput.py
index 2ecb176f363a3a8e5bcb808460fb562544963367..f365bf8b32152b4e87d3f0b45d3e939aa661b95f 100644
--- a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/detectionoutput.py
+++ b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/detectionoutput.py
@@ -34,7 +34,7 @@ class DetectionOutput(object):
         pbv = priorbox_list[1]
         pb = paddle.reshape(x=pb, shape=[-1, 4])
         pbv = paddle.reshape(x=pbv, shape=[-1, 4])
-        pb_dim = fluid.layers.shape(pb)[0]
+        pb_dim = paddle.shape(pb)[0]
         loc = paddle.reshape(x0, shape=[-1, pb_dim, 4])
         conf_flatten = paddle.reshape(x1, shape=[0, pb_dim, -1])
         out = fluid.layers.detection_output(
diff --git a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/normalize.py b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/normalize.py
index c54758244f5ce6bb3d8162ed8a28ddc9b5d0682d..184df4c1cba2d85d72e828cb97f7e84a07926e22 100644
--- a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/normalize.py
+++ b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/normalize.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import paddle
-import paddle.fluid as fluid
 
 
 class Normalize(object):
@@ -21,7 +20,7 @@ class Normalize(object):
         self.axis = axis
 
     def __call__(self, x, param):
-        l2_norm = fluid.layers.l2_normalize(x=x, axis=1)
+        l2_norm = paddle.norm(x=x, p=2, axis=1, keepdim=True)
         param = paddle.reshape(param, [param.shape[-1]])
         perm = list(range(len(l2_norm.shape)))
         perm.pop(self.axis)
diff --git a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/priorbox.py b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/priorbox.py
index eb4f5f99deca576dabda4374e768da8cb4a7738d..ecdb892b6915d0f57720d7998b998e12d6f6b039 100644
--- a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/priorbox.py
+++ b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/priorbox.py
@@ -13,7 +13,87 @@
 # limitations under the License.
 
 import paddle
-import paddle.fluid as fluid
+from paddle import _C_ops
+from paddle import in_dynamic_mode
+from paddle.common_ops_import import Variable, LayerHelper, check_variable_and_dtype, check_type, check_dtype
+
+
+@paddle.jit.not_to_static
+def prior_box(input,
+              image,
+              min_sizes,
+              max_sizes=None,
+              aspect_ratios=[1.],
+              variance=[0.1, 0.1, 0.2, 0.2],
+              flip=False,
+              clip=False,
+              steps=[0.0, 0.0],
+              offset=0.5,
+              min_max_aspect_ratios_order=False,
+              name=None):
+    helper = LayerHelper("prior_box", **locals())
+    dtype = helper.input_dtype()
+    check_variable_and_dtype(
+        input, 'input', ['uint8', 'int8', 'float32', 'float64'], 'prior_box')
+
+    def _is_list_or_tuple_(data):
+        return (isinstance(data, list) or isinstance(data, tuple))
+
+    if not _is_list_or_tuple_(min_sizes):
+        min_sizes = [min_sizes]
+    if not _is_list_or_tuple_(aspect_ratios):
+        aspect_ratios = [aspect_ratios]
+    if not (_is_list_or_tuple_(steps) and len(steps) == 2):
+        raise ValueError('steps should be a list or tuple ',
+                         'with length 2, (step_width, step_height).')
+
+    min_sizes = list(map(float, min_sizes))
+    aspect_ratios = list(map(float, aspect_ratios))
+    steps = list(map(float, steps))
+
+    cur_max_sizes = None
+    if max_sizes is not None and len(max_sizes) > 0 and max_sizes[0] > 0:
+        if not _is_list_or_tuple_(max_sizes):
+            max_sizes = [max_sizes]
+        cur_max_sizes = max_sizes
+
+    if in_dynamic_mode():
+        attrs = ('min_sizes', min_sizes, 'aspect_ratios', aspect_ratios,
+                 'variances', variance, 'flip', flip, 'clip', clip, 'step_w',
+                 steps[0], 'step_h', steps[1], 'offset', offset,
+                 'min_max_aspect_ratios_order', min_max_aspect_ratios_order)
+        if cur_max_sizes is not None:
+            attrs += ('max_sizes', cur_max_sizes)
+        box, var = _C_ops.prior_box(input, image, *attrs)
+        return box, var
+    else:
+        attrs = {
+            'min_sizes': min_sizes,
+            'aspect_ratios': aspect_ratios,
+            'variances': variance,
+            'flip': flip,
+            'clip': clip,
+            'step_w': steps[0],
+            'step_h': steps[1],
+            'offset': offset,
+            'min_max_aspect_ratios_order': min_max_aspect_ratios_order
+        }
+
+        if cur_max_sizes is not None:
+            attrs['max_sizes'] = cur_max_sizes
+
+        box = helper.create_variable_for_type_inference(dtype)
+        var = helper.create_variable_for_type_inference(dtype)
+        helper.append_op(
+            type="prior_box",
+            inputs={"Input": input,
+                    "Image": image},
+            outputs={"Boxes": box,
+                     "Variances": var},
+            attrs=attrs, )
+        box.stop_gradient = True
+        var.stop_gradient = True
+        return box, var
 
 
 class PriorBox(object):
@@ -32,8 +112,7 @@ class PriorBox(object):
         }
 
     def __call__(self, x0, x1):
-        box, var = fluid.layers.prior_box(
-            input=x0, image=x1, **self.priorbox_layer_attrs)
+        box, var = prior_box(input=x0, image=x1, **self.priorbox_layer_attrs)
         box = paddle.reshape(x=box, shape=[1, 1, -1])
         var = paddle.reshape(x=var, shape=[1, 1, -1])
         out = paddle.concat(x=[box, var], axis=1)
diff --git a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/roipooling.py b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/roipooling.py
index 5f6b81b2993cdd7428cfe9dd1cb72becf24c1210..e99906bd0a769e7373bcf3f36d8424c9bf97ada8 100644
--- a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/roipooling.py
+++ b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/roipooling.py
@@ -13,7 +13,51 @@
 # limitations under the License.
 
 import paddle
-import paddle.fluid as fluid
+from paddle import _C_ops
+from paddle import in_dynamic_mode
+from paddle.common_ops_import import Variable, LayerHelper, check_variable_and_dtype, check_type, check_dtype
+
+
+@paddle.jit.not_to_static
+def roi_pool(input,
+             rois,
+             pooled_height,
+             pooled_width,
+             spatial_scale=1.0,
+             rois_num=None,
+             name=None):
+    if in_dynamic_mode():
+        assert rois_num is not None, "rois_num should not be None in dygraph mode."
+        pool_out, argmaxes = _C_ops.roi_pool(
+            input, rois, rois_num, "pooled_height", pooled_height,
+            "pooled_width", pooled_width, "spatial_scale", spatial_scale)
+        return pool_out, argmaxes
+
+    else:
+        check_variable_and_dtype(input, 'input', ['float32'], 'roi_pool')
+        check_variable_and_dtype(rois, 'rois', ['float32'], 'roi_pool')
+        helper = LayerHelper('roi_pool', **locals())
+        dtype = helper.input_dtype()
+        pool_out = helper.create_variable_for_type_inference(dtype)
+        argmaxes = helper.create_variable_for_type_inference(dtype='int32')
+
+        inputs = {
+            "X": input,
+            "ROIs": rois,
+        }
+        if rois_num is not None:
+            inputs['RoisNum'] = rois_num
+        helper.append_op(
+            type="roi_pool",
+            inputs=inputs,
+            outputs={"Out": pool_out,
+                     "Argmax": argmaxes},
+            attrs={
+                "pooled_height": pooled_height,
+                "pooled_width": pooled_width,
+                "spatial_scale": spatial_scale
+            })
+        return pool_out, argmaxes
 
 
 class ROIPooling(object):
@@ -26,6 +70,5 @@ class ROIPooling(object):
 
     def __call__(self, x0, x1):
         slice_x1 = paddle.slice(input=x1, axes=[1], starts=[1], ends=[5])
-        out = fluid.layers.roi_pool(
-            input=x0, rois=slice_x1, **self.roipooling_layer_attrs)
+        out = roi_pool(input=x0, rois=slice_x1, **self.roipooling_layer_attrs)
         return out
diff --git a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/select.py b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/select.py
index 9238f1097994d2ea464a58d0be4065da836f93ef..a7b7075c497328d4eaf4d8c7625a41ca530926e8 100644
--- a/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/select.py
+++ b/x2paddle/op_mapper/caffe2paddle/caffe_custom_layer/select.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 import paddle
-import paddle.fluid as fluid
 
 
 class Select(object):
diff --git a/x2paddle/op_mapper/caffe2paddle/caffe_op_mapper.py b/x2paddle/op_mapper/caffe2paddle/caffe_op_mapper.py
index edd16da4f394664dff6a671fad8ed2d000cbfeeb..f543122747c044df95bb663c85f84329cf7c2880 100644
--- a/x2paddle/op_mapper/caffe2paddle/caffe_op_mapper.py
+++ b/x2paddle/op_mapper/caffe2paddle/caffe_op_mapper.py
@@ -429,13 +429,13 @@ class CaffeOpMapper():
         assert params.local_size % 2 == 1
         alpha = params.alpha / float(params.local_size)
         layer_attrs = {
-            "n": params.local_size,
-            "k": params.k,
+            "size": params.local_size,
             "alpha": alpha,
             "beta": params.beta,
+            "k": params.k,
         }
         self.paddle_graph.add_layer(
-            "paddle.fluid.layers.lrn",
+            "paddle.nn.LocalResponseNorm",
             inputs={"input": input.name},
             outputs=[node.layer_name],
             **layer_attrs)
@@ -1209,10 +1209,10 @@ class CaffeOpMapper():
         input = self.graph.get_input_node(node, idx=0, copy=True)
         params = node.layer.shuffle_channel_param
         self.paddle_graph.add_layer(
-            "paddle.fluid.layers.shuffle_channel",
+            "paddle.nn.functional.channel_shuffle",
             inputs={"x": input.name},
             outputs=[node.layer_name],
-            group=params.group)
+            groups=params.group)
 
     def Upsample(self, node):
         assert len(
diff --git a/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/__init__.py b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/__init__.py
index a1d160a45fe73fc06f809fad0cbe9f6fcd8606a4..db0aea03ce7dc8f263755191682f31b7f39305b5 100644
--- a/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/__init__.py
+++ b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/__init__.py
@@ -18,3 +18,5 @@ from .pad_all_dim2 import PadAllDim2
 from .pad_all_dim4 import PadAllDim4
 from .pad_all_dim4_one_input import PadAllDim4WithOneInput
 from .nms import NMS
+from .roi_align import ROIAlign
+from .roi_pooling import ROIPooling
diff --git a/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/nms.py b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/nms.py
index 17d573dbffaf9f0d37a7e1d1b366946cd3ae624f..32f770a30820ccee809a75aafe4b0a2d248aec9f 100644
--- a/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/nms.py
+++ b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/nms.py
@@ -13,9 +13,9 @@
 # limitations under the License.
 
 import paddle
-from paddle.fluid import core
-from paddle.fluid.framework import Variable, in_dygraph_mode
-from paddle.fluid.layer_helper import LayerHelper
+from paddle import _C_ops
+from paddle import in_dynamic_mode
+from paddle.common_ops_import import Variable, LayerHelper
 
 
 def multiclass_nms(bboxes,
@@ -33,13 +33,13 @@ def multiclass_nms(bboxes,
                    name=None):
     helper = LayerHelper('multiclass_nms3', **locals())
 
-    if in_dygraph_mode():
+    if in_dynamic_mode():
         attrs = ('background_label', background_label, 'score_threshold',
                  score_threshold, 'nms_top_k', nms_top_k, 'nms_threshold',
                  nms_threshold, 'keep_top_k', keep_top_k, 'nms_eta', nms_eta,
                  'normalized', normalized)
-        output, index, nms_rois_num = core.ops.multiclass_nms3(bboxes, scores,
-                                                               rois_num, *attrs)
+        output, index, nms_rois_num = _C_ops.multiclass_nms3(bboxes, scores,
+                                                             rois_num, *attrs)
         if not return_index:
             index = None
         return output, nms_rois_num, index
diff --git a/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/roi_align.py b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/roi_align.py
new file mode 100644
index 0000000000000000000000000000000000000000..24232d675e9b5e2dd27c7f2d0ccc0801d50416bb
--- /dev/null
+++ b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/roi_align.py
@@ -0,0 +1,80 @@
+# Copyright (c) 2020  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import paddle
+from paddle import _C_ops
+from paddle import in_dynamic_mode
+from paddle.common_ops_import import Variable, LayerHelper, check_variable_and_dtype, check_type, check_dtype
+
+
+@paddle.jit.not_to_static
+def roi_align(input,
+              rois,
+              pooled_height,
+              pooled_width,
+              spatial_scale=1.0,
+              sampling_ratio=-1,
+              rois_num=None,
+              aligned=False,
+              name=None):
+    if in_dynamic_mode():
+        assert rois_num is not None, "rois_num should not be None in dygraph mode."
+        align_out = _C_ops.roi_align(
+            input, rois, rois_num, "pooled_height", pooled_height,
+            "pooled_width", pooled_width, "spatial_scale", spatial_scale,
+            "sampling_ratio", sampling_ratio, "aligned", aligned)
+        return align_out
+
+    else:
+        check_variable_and_dtype(input, 'input', ['float32', 'float64'],
+                                 'roi_align')
+        check_variable_and_dtype(rois, 'rois', ['float32', 'float64'],
+                                 'roi_align')
+        helper = LayerHelper('roi_align', **locals())
+        dtype = helper.input_dtype()
+        align_out = helper.create_variable_for_type_inference(dtype)
+        inputs = {
+            "X": input,
+            "ROIs": rois,
+        }
+        if rois_num is not None:
+            inputs['RoisNum'] = rois_num
+        helper.append_op(
+            type="roi_align",
+            inputs=inputs,
+            outputs={"Out": align_out},
+            attrs={
+                "pooled_height": pooled_height,
+                "pooled_width": pooled_width,
+                "spatial_scale": spatial_scale,
+                "sampling_ratio": sampling_ratio,
+                "aligned": aligned,
+            })
+        return align_out
+
+
+class ROIAlign(object):
+    def __init__(self, pooled_height, pooled_width, spatial_scale,
+                 sampling_ratio):
+        self.roialign_layer_attrs = {
+            "pooled_height": pooled_height,
+            "pooled_width": pooled_width,
+            "spatial_scale": spatial_scale,
+            'sampling_ratio': sampling_ratio,
+        }
+
+    def __call__(self, x0, x1, x2):
+        out = roi_align(
+            input=x0, rois=x1, rois_num=x2, **self.roialign_layer_attrs)
+        return out
diff --git a/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/roi_pooling.py b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/roi_pooling.py
new file mode 100644
index 0000000000000000000000000000000000000000..c8e5282b157f6f2ee9355fff52a5d7b19b1a9db7
--- /dev/null
+++ b/x2paddle/op_mapper/onnx2paddle/onnx_custom_layer/roi_pooling.py
@@ -0,0 +1,73 @@
+# Copyright (c) 2020  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import paddle
+from paddle import _C_ops
+from paddle import in_dynamic_mode
+from paddle.common_ops_import import Variable, LayerHelper, check_variable_and_dtype, check_type, check_dtype
+
+
+@paddle.jit.not_to_static
+def roi_pool(input,
+             rois,
+             pooled_height,
+             pooled_width,
+             spatial_scale=1.0,
+             rois_num=None,
+             name=None):
+    if in_dynamic_mode():
+        assert rois_num is not None, "rois_num should not be None in dygraph mode."
+        pool_out, argmaxes = _C_ops.roi_pool(
+            input, rois, rois_num, "pooled_height", pooled_height,
+            "pooled_width", pooled_width, "spatial_scale", spatial_scale)
+        return pool_out, argmaxes
+
+    else:
+        check_variable_and_dtype(input, 'input', ['float32'], 'roi_pool')
+        check_variable_and_dtype(rois, 'rois', ['float32'], 'roi_pool')
+        helper = LayerHelper('roi_pool', **locals())
+        dtype = helper.input_dtype()
+        pool_out = helper.create_variable_for_type_inference(dtype)
+        argmaxes = helper.create_variable_for_type_inference(dtype='int32')
+
+        inputs = {
+            "X": input,
+            "ROIs": rois,
+        }
+        if rois_num is not None:
+            inputs['RoisNum'] = rois_num
+        helper.append_op(
+            type="roi_pool",
+            inputs=inputs,
+            outputs={"Out": pool_out,
+                     "Argmax": argmaxes},
+            attrs={
+                "pooled_height": pooled_height,
+                "pooled_width": pooled_width,
+                "spatial_scale": spatial_scale
+            })
+        return pool_out, argmaxes
+
+
+class ROIPooling(object):
+    def __init__(self, pooled_height, pooled_width, spatial_scale):
+        self.roipooling_layer_attrs = {
+            "pooled_height": pooled_height,
+            "pooled_width": pooled_width,
+            "spatial_scale": spatial_scale
+        }
+
+    def __call__(self, x0, x1):
+        out = roi_pool(input=x0, rois=x1, **self.roipooling_layer_attrs)
+        return out
diff --git a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
index 3f0f0443952226f5dcf09c81278158ce4e94f540..9c205a48605c6a5952cef2f68e18803da95fd2c6 100755
--- a/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
+++ b/x2paddle/op_mapper/onnx2paddle/opset9/opset.py
@@ -538,12 +538,14 @@ class OpSet9():
             'pooled_width': pooled_width,
             'spatial_scale': spatial_scale,
             'sampling_ratio': sampling_ratio,
-            'rois_num': val_rois_num,
         }
         self.paddle_graph.add_layer(
-            'paddle.fluid.layers.roi_align',
-            inputs={'input': val_x.name,
-                    'rois': val_rois.name},
+            'custom_layer:ROIAlign',
+            inputs={
+                'input': val_x.name,
+                'rois': val_rois.name,
+                'rois_num': val_rois_num
+            },
             outputs=[node.name],
             **layer_attrs)
 
@@ -560,7 +562,7 @@ class OpSet9():
             'spatial_scale': spatial_scale,
         }
         self.paddle_graph.add_layer(
-            'paddle.fluid.layers.roi_pool',
+            'custom_layer:ROIPooling',
             inputs={'input': val_x.name,
                     'rois': val_rois.name},
             outputs=[node.name],
diff --git a/x2paddle/op_mapper/prim2code.py b/x2paddle/op_mapper/prim2code.py
index 4fc71f92f301c94d240eb2667690b026088fc7ff..8b4e7bc662fe1b6a312c571a5c4dd3d92a640d39 100644
--- a/x2paddle/op_mapper/prim2code.py
+++ b/x2paddle/op_mapper/prim2code.py
@@ -612,7 +612,7 @@ def prim_shape_dim(layer,
                    forward_func=[],
                    layer_id=None,
                    different_attrs=None):
-    line = "{} = fluid.layers.shape({})[{}]".format(
+    line = "{} = paddle.shape({})[{}]".format(
         layer.outputs[0],
         get_value(layer, "input", different_attrs),
         get_value(layer, "dim", different_attrs))
diff --git a/x2paddle/op_mapper/pytorch2paddle/aten.py b/x2paddle/op_mapper/pytorch2paddle/aten.py
index 71ee05e58c73a9da127824d0a1a9c4fdea06eb3a..676fee6e277951048971917210cfc59cdaa04335 100755
--- a/x2paddle/op_mapper/pytorch2paddle/aten.py
+++ b/x2paddle/op_mapper/pytorch2paddle/aten.py
@@ -6025,7 +6025,7 @@ def aten_upsample_bilinear2d(mapper, graph, node):
             inputs={"input": inputs_name[1]},
             outputs=[inputs_name[1] + "_isinstance"],
             scope_name=scope_name,
-            cls="paddle.fluid.Variable")
+            cls="paddle.static.Variable")
         # TODO(syf): paddle.Variable
         graph.add_layer(
             "prim.if", {"input": inputs_name[1] + "_isinstance"},
@@ -6103,7 +6103,7 @@ def aten_upsample_nearest2d(mapper, graph, node):
             inputs={"input": inputs_name[1]},
             outputs=[inputs_name[1] + "_isinstance"],
             scope_name=scope_name,
-            cls="paddle.fluid.Variable")
+            cls="paddle.static.Variable")
         # TODO(syf): paddle.Variable
         graph.add_layer(
             "prim.if", {"input": inputs_name[1] + "_isinstance"},
diff --git a/x2paddle/op_mapper/pytorch2paddle/pytorch_custom_layer/instance_norm.py b/x2paddle/op_mapper/pytorch2paddle/pytorch_custom_layer/instance_norm.py
index 6f446c206088ce4471a32293e2ca0c6539782bf4..de58c4f395407141988d363ed65fa469ad17a062 100644
--- a/x2paddle/op_mapper/pytorch2paddle/pytorch_custom_layer/instance_norm.py
+++ b/x2paddle/op_mapper/pytorch2paddle/pytorch_custom_layer/instance_norm.py
@@ -14,7 +14,7 @@
 
 import paddle
 from paddle.nn.functional import instance_norm
-from paddle.fluid.initializer import Constant
+from paddle.nn.initializer import Constant
 
 
 class InstanceNorm(paddle.nn.Layer):
diff --git a/x2paddle/optimizer/fusion/interpolate_bilinear_fuser.py b/x2paddle/optimizer/fusion/interpolate_bilinear_fuser.py
index d19fd9e957a3ef56ab4b5214c1d0a4f577c44f56..566ac62919a7540ee2f35a8a3a312ff122b5b861 100644
--- a/x2paddle/optimizer/fusion/interpolate_bilinear_fuser.py
+++ b/x2paddle/optimizer/fusion/interpolate_bilinear_fuser.py
@@ -46,7 +46,7 @@ class InterpolateBilinearFuser(FuseBase):
                 if x2271 :
                     x2274 = x2197[0]
                     x2275 = x2197[1]
-                    x2233_isinstance = isinstance(x2233, paddle.fluid.Variable)
+                    x2233_isinstance = isinstance(x2233, paddle.static.Variable)
                     if x2233_isinstance :
                         x2233 = x2233.numpy().tolist()
                     x2276 = paddle.nn.functional.interpolate(x=x2181, size=x2233, scale_factor=x2274, align_corners=False, align_mode=0, mode='bilinear')
@@ -146,7 +146,7 @@ class InterpolateBilinearFuser(FuseBase):
             "prim.isinstance",
             inputs={"input": "interpolate-input-3"},
             outputs=["interpolate-input-0_isinstance"],
-            cls="paddle.fluid.Variable")
+            cls="paddle.static.Variable")
         pattern_block_block.add_layer(
             "prim.if", {"input": "interpolate-input-0_isinstance"},
             outputs=["interpolate-input-0_if1"])
diff --git a/x2paddle/utils.py b/x2paddle/utils.py
index c3a6d1449867288d8c3df45d9121e518e538e369..12be0b0de96c015af6f776897562ecdd5fd23cb4 100644
--- a/x2paddle/utils.py
+++ b/x2paddle/utils.py
@@ -103,15 +103,7 @@ class PaddleDtypes():
             self.t_int64 = paddle.int64
             self.t_bool = paddle.bool
         else:
-            self.t_float16 = "paddle.fluid.core.VarDesc.VarType.FP16"
-            self.t_float32 = "paddle.fluid.core.VarDesc.VarType.FP32"
-            self.t_float64 = "paddle.fluid.core.VarDesc.VarType.FP64"
-            self.t_uint8 = "paddle.fluid.core.VarDesc.VarType.UINT8"
-            self.t_int8 = "paddle.fluid.core.VarDesc.VarType.INT8"
-            self.t_int16 = "paddle.fluid.core.VarDesc.VarType.INT16"
-            self.t_int32 = "paddle.fluid.core.VarDesc.VarType.INT32"
-            self.t_int64 = "paddle.fluid.core.VarDesc.VarType.INT64"
-            self.t_bool = "paddle.fluid.core.VarDesc.VarType.BOOL"
+            raise Exception("Paddle>=2.0.0 is required, Please update version!")
 
 
 is_new_version = check_version()