diff --git a/python/paddle/fluid/tests/unittests/ir/inference/CMakeLists.txt b/python/paddle/fluid/tests/unittests/ir/inference/CMakeLists.txt
index 45e392cd66e90a14a1176f0bd076391a811de53c..0ea9b8d2fc62f08fee6ee2acc335c0d6226445ed 100644
--- a/python/paddle/fluid/tests/unittests/ir/inference/CMakeLists.txt
+++ b/python/paddle/fluid/tests/unittests/ir/inference/CMakeLists.txt
@@ -38,4 +38,5 @@ set_tests_properties(test_trt_dynamic_shape PROPERTIES TIMEOUT 120)
 set_tests_properties(test_trt_pool_op PROPERTIES ENVIRONMENT FLAGS_fraction_of_gpu_memory_to_use=0.1 TIMEOUT 45)
 set_tests_properties(test_trt_reduce_mean_op PROPERTIES TIMEOUT 60)
 set_tests_properties(test_trt_tile_op PROPERTIES TIMEOUT 60)
+set_tests_properties(test_trt_convert_conv2d PROPERTIES TIMEOUT 100)
 endif()
diff --git a/python/paddle/fluid/tests/unittests/ir/inference/auto_scan_test.py b/python/paddle/fluid/tests/unittests/ir/inference/auto_scan_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..7d749cca5c2541ada25af6401e975220c8a9fe51
--- /dev/null
+++ b/python/paddle/fluid/tests/unittests/ir/inference/auto_scan_test.py
@@ -0,0 +1,92 @@
+# Copyright (c) 2021 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 numpy as np
+import unittest
+import abc
+import paddle
+import paddle.fluid as fluid
+from paddle.fluid.initializer import NumpyArrayInitializer
+import paddle.fluid.core as core
+from paddle import compat as cpt
+import paddle.inference as paddle_infer
+from typing import Optional, List, Callable, Dict, Any, Set
+from program_config import TensorConfig, OpConfig, ProgramConfig, create_fake_model
+
+
+class AutoScanTest(unittest.TestCase):
+    def __init__(self, methodName='runTest'):
+        paddle.enable_static()
+        super(AutoScanTest, self).__init__(methodName)
+        self.threshold = 1e-5
+
+    @abc.abstractmethod
+    def sample_program_configs(self) -> List[ProgramConfig]:
+        '''
+        Generate all config with the combination of different Input tensor shape and
+        different Attr values.
+        '''
+        raise NotImplementedError
+
+    @abc.abstractmethod
+    def sample_predictor_configs(self) -> List[paddle_infer.Config]:
+        raise NotImplementedError
+
+    def run_test_config(self, model, params, prog_config, pred_config,
+                        feed_data) -> Dict[str, np.ndarray]:
+        '''
+        Test a single case.
+        '''
+        pred_config.set_model_buffer(model, len(model), params, len(params))
+        predictor = paddle_infer.create_predictor(pred_config)
+
+        for name, _ in prog_config.inputs.items():
+            input_tensor = predictor.get_input_handle(name)
+            input_tensor.copy_from_cpu(feed_data[name])
+        predictor.run()
+        result = {}
+        for out_name in prog_config.outputs:
+            result[out_name] = predictor.get_output_handle(
+                out_name).copy_to_cpu()
+        return result
+
+    def assert_tensors_near(self,
+                            threshold: float,
+                            tensors: List[Dict[str, np.array]]):
+        assert len(tensors) > 1
+        first = tensors[0]
+        for group in tensors[1:]:
+            for key, arr in group.items():
+                self.assertTrue(
+                    np.allclose(
+                        first[key], arr, atol=threshold),
+                    "Output has diff between GPU and TensorRT. ")
+
+    def run_test(self):
+        for prog_config in self.sample_program_configs():
+            model, params = create_fake_model(prog_config)
+            for batch_size in self.batch_size_set:
+                feed_data = {}
+                for name, tensor_config in prog_config.inputs.items():
+                    tensor_shape = tensor_config.shape.copy()
+                    tensor_shape[0] = batch_size
+                    feed_data[name] = np.random.random(tensor_shape).astype(
+                        tensor_config.dtype)
+                results: List[Dict[str, Tensor]] = []
+                for pred_config in self.sample_predictor_configs():
+                    results.append(
+                        self.run_test_config(model, params, prog_config,
+                                             pred_config, feed_data))
+                self.assert_tensors_near(
+                    threshold=self.threshold, tensors=results)
diff --git a/python/paddle/fluid/tests/unittests/ir/inference/program_config.py b/python/paddle/fluid/tests/unittests/ir/inference/program_config.py
new file mode 100644
index 0000000000000000000000000000000000000000..399501618b6988d9ec63af48beec5ce39924ca80
--- /dev/null
+++ b/python/paddle/fluid/tests/unittests/ir/inference/program_config.py
@@ -0,0 +1,162 @@
+# Copyright (c) 2021 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.
+
+from typing import Optional, List, Callable, Dict, Any, Set
+import numpy as np
+import paddle
+import paddle.fluid as fluid
+import paddle.fluid.core as core
+from paddle import compat as cpt
+from paddle.fluid.initializer import NumpyArrayInitializer
+from paddle.fluid.framework import convert_np_dtype_to_dtype_
+
+
+class TensorConfig:
+    '''
+    A config builder for a input or a weight.
+  
+    InputVar's shape can be [-1, xxx], batch_size
+    '''
+
+    def __init__(self,
+                 shape: [List[int]],
+                 dtype: [str]="float32",
+                 data: Optional[np.array]=None):
+        '''
+        shape: The shape of the tensor.
+        dtype: The data type of the tensor.
+        data: The value of WeightVar. for input, it should be None 
+        '''
+        self.shape = shape
+        self.dtype = dtype
+        self.data = data
+
+
+class OpConfig:
+    '''  A config builder for generating a Op.  '''
+
+    def __init__(self,
+                 type: str,
+                 inputs: Dict[str, List[str]],
+                 outputs: Dict[str, List[str]],
+                 attrs: Dict[str, Any]):
+        self.type = type
+        self.inputs = inputs
+        self.outputs = outputs
+        self.attrs = attrs
+
+
+class ProgramConfig:
+    '''  A config builder for generating a Program.  '''
+
+    def __init__(self,
+                 ops: List[OpConfig],
+                 weights: Dict[str, TensorConfig],
+                 inputs: Dict[str, TensorConfig],
+                 outputs: List[str]):
+        self.ops = ops
+        self.weights = weights
+        self.inputs = inputs
+        self.outputs = outputs
+
+
+def create_fake_model(program_config):
+    '''  Create a Paddle model(in memory) according to the given config.  '''
+    paddle.enable_static()
+    main_program_desc = core.ProgramDesc()
+    util_program = fluid.Program()
+    main_block_desc = main_program_desc.block(0)
+
+    var_desc = main_block_desc.var(cpt.to_bytes("feed"))
+    var_desc.set_type(core.VarDesc.VarType.FEED_MINIBATCH)
+    var_desc.set_persistable(True)
+
+    index = 0
+    for name, tensor_config in program_config.inputs.items():
+        var_desc = main_block_desc.var(cpt.to_bytes(name))
+        var_desc.set_type(core.VarDesc.VarType.LOD_TENSOR)
+        var_desc.set_dtype(convert_np_dtype_to_dtype_(tensor_config.dtype))
+        var_desc.set_shape(tensor_config.shape)
+        var_desc.set_need_check_feed(True)
+        op_desc = main_block_desc._prepend_op()
+        op_desc.set_type("feed")
+        op_desc.set_input('X', ["feed"])
+        op_desc.set_output('Out', [name])
+        op_desc._set_attr("col", index)
+        index = index + 1
+
+    save_var_map = {}
+    for name, tensor_config in program_config.weights.items():
+        var_desc = main_block_desc.var(cpt.to_bytes(name))
+        var_desc.set_type(core.VarDesc.VarType.LOD_TENSOR)
+        var_desc.set_dtype(convert_np_dtype_to_dtype_(tensor_config.dtype))
+        var_desc.set_shape(tensor_config.shape)
+        var_desc.set_persistable(True)
+
+        save_var_map[name] = util_program.global_block().create_parameter(
+            dtype=tensor_config.dtype,
+            shape=tensor_config.shape,
+            type=core.VarDesc.VarType.LOD_TENSOR,
+            name=name,
+            initializer=NumpyArrayInitializer(tensor_config.data))
+    in_vars = []
+    for name in sorted(save_var_map.keys()):
+        in_vars.append(save_var_map[name])
+
+    out_var = util_program.global_block().create_var(
+        type=core.VarDesc.VarType.RAW, name="out_var_0")
+    out_var.desc.set_persistable(True)
+    util_program.global_block().append_op(
+        type='save_combine',
+        inputs={'X': in_vars},
+        outputs={'Y': out_var},
+        attrs={'file_path': '',
+               'save_to_memory': True})
+    for op_config in program_config.ops:
+        op_desc = main_block_desc.append_op()
+        op_desc.set_type(op_config.type)
+        for name, values in op_config.inputs.items():
+            op_desc.set_input(name, values)
+        for name, values in op_config.attrs.items():
+            op_desc._set_attr(name, values)
+        for name, values in op_config.outputs.items():
+            op_desc.set_output(name, values)
+            var_desc = main_block_desc.var(cpt.to_bytes(name))
+            var_desc.set_type(core.VarDesc.VarType.LOD_TENSOR)
+        op_desc.infer_var_type(main_block_desc)
+        op_desc.infer_shape(main_block_desc)
+
+    for index, name in enumerate(program_config.outputs):
+        var_desc = main_block_desc.var(cpt.to_bytes("fetch"))
+        var_desc.set_type(core.VarDesc.VarType.FETCH_LIST)
+        var_desc.set_need_check_feed(True)
+        op_desc = main_block_desc.append_op()
+        op_desc.set_type("fetch")
+        op_desc.set_input('X', [name])
+        op_desc.set_output('Out', ["fetch"])
+        op_desc._set_attr("col", index)
+
+    main_program_desc._set_version()
+    paddle.fluid.core.save_op_version_info(main_program_desc)
+
+    model = main_program_desc.serialize_to_string()
+
+    util_program._sync_with_cpp()
+    place = fluid.CPUPlace()
+    executor = fluid.Executor(place)
+    scope = fluid.Scope()
+    with fluid.scope_guard(scope):
+        executor.run(util_program)
+        params = scope.find_var("out_var_0").get_bytes()
+    return model, params
diff --git a/python/paddle/fluid/tests/unittests/ir/inference/test_trt_convert_conv2d.py b/python/paddle/fluid/tests/unittests/ir/inference/test_trt_convert_conv2d.py
new file mode 100644
index 0000000000000000000000000000000000000000..98c3367b3f2c3ba645acc8496ad00e1b5157a965
--- /dev/null
+++ b/python/paddle/fluid/tests/unittests/ir/inference/test_trt_convert_conv2d.py
@@ -0,0 +1,67 @@
+# Copyright (c) 2021 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.
+
+from trt_layer_auto_scan_test import TrtLayerAutoScanTest
+from program_config import TensorConfig
+import numpy as np
+
+
+class TrtConvertConv2dTest(TrtLayerAutoScanTest):
+    def setUp(self):
+        self.ops_config = [{
+            "op_type": "conv2d",
+            "op_inputs": {
+                "Input": ["input_data"],
+                "Filter": ["conv2d_weight"]
+            },
+            "op_outputs": {
+                "Output": ["conv_output_data"]
+            },
+            "op_attrs": {
+                "data_format": ["NCHW"],
+                "dilations": [[1, 1]],
+                "padding_algorithm": ["EXPLICIT"],
+                "groups": [1],
+                "paddings": [[0, 3], [3, 1]],
+                "strides": [[1, 1], [2, 2]],
+            }
+        }, {
+            "op_type": "relu",
+            "op_inputs": {
+                "X": ["conv_output_data"]
+            },
+            "op_outputs": {
+                "Out": ["relu_output_data"]
+            },
+            "op_attrs": {}
+        }]
+        self.batch_size_set = [1, 2, 4]
+
+    def update_program_input_and_weight_with_attr(self, op_attr_list):
+        weight = np.random.randn(24, 3, 3, 3).astype("float32")
+        filter = TensorConfig(shape=[24, 3, 3, 3], data=weight)
+        if op_attr_list[0]["data_format"] == "NCHW":
+            input_data = TensorConfig(shape=[-1, 3, 64, 64])
+        else:
+            input_data = TensorConfig(shape=[-1, 64, 64, 3])
+        self.program_weights = {"conv2d_weight": filter}
+        self.program_inputs = {"input_data": input_data}
+        self.program_outputs = ["relu_output_data"]
+
+    def test_check_output(self):
+        self.run_test()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/python/paddle/fluid/tests/unittests/ir/inference/trt_layer_auto_scan_test.py b/python/paddle/fluid/tests/unittests/ir/inference/trt_layer_auto_scan_test.py
new file mode 100644
index 0000000000000000000000000000000000000000..589916ad39003d7428b5899380f0cb8cba616886
--- /dev/null
+++ b/python/paddle/fluid/tests/unittests/ir/inference/trt_layer_auto_scan_test.py
@@ -0,0 +1,115 @@
+# Copyright (c) 2021 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 numpy as np
+import unittest
+import itertools
+import abc
+import paddle
+import paddle.fluid as fluid
+import paddle.fluid.core as core
+import paddle.inference as paddle_infer
+
+from paddle import compat as cpt
+from typing import *
+from program_config import TensorConfig, OpConfig, ProgramConfig
+from auto_scan_test import AutoScanTest
+
+
+class TrtLayerAutoScanTest(AutoScanTest):
+    class TensorRTParam:
+        '''
+        TensorRT subgraph engine parameters. 
+        '''
+
+        def __init__(self, workspace_size, max_batch_size, min_subgraph_size,
+                     precision, use_static, use_calib_mode):
+            self.workspace_size = workspace_size
+            self.max_batch_size = max_batch_size
+            self.min_subgraph_size = min_subgraph_size
+            self.precision = precision
+            self.use_static = use_static
+            self.use_calib_mode = use_calib_mode
+
+    def __init__(self, methodName='runTest'):
+        super(TrtLayerAutoScanTest, self).__init__(methodName)
+        self.trt_param = self.TensorRTParam(
+            workspace_size=0,
+            max_batch_size=4,
+            min_subgraph_size=0,
+            precision=paddle_infer.PrecisionType.Float32,
+            use_static=False,
+            use_calib_mode=False)
+
+    def update_program_input_and_weight_with_attr(self, op_attr_list):
+        raise NotImplementedError
+
+    @abc.abstractmethod
+    def sample_program_configs(self):
+        all_op_attrs_keys = []
+        all_op_attrs_values = []
+        for op_config in self.ops_config:
+            all_op_attrs_keys.append(list(op_config["op_attrs"].keys()))
+            all_op_attrs_values.extend(list(op_config["op_attrs"].values()))
+        if len(all_op_attrs_values) == 0:
+            all_op_attrs_values.append([None])
+        for attrs_sample in itertools.product(*all_op_attrs_values):
+            op_attr_list = []
+            index = 0
+            ops = []
+            for op_config in self.ops_config:
+                op_attr = dict(
+                    zip(
+                        list(op_config["op_attrs"].keys()), attrs_sample[
+                            index:index + len(op_config["op_attrs"])]))
+                op_attr_list.append(op_attr)
+                index = index + len(op_config["op_attrs"])
+                ops.append(
+                    OpConfig(
+                        type=op_config["op_type"],
+                        inputs=op_config["op_inputs"],
+                        outputs=op_config["op_outputs"],
+                        attrs=op_attr))
+
+            self.update_program_input_and_weight_with_attr(op_attr_list)
+            program_config = ProgramConfig(
+                ops=ops,
+                weights=self.program_weights,
+                inputs=self.program_inputs,
+                outputs=self.program_outputs)
+            yield program_config
+
+    def create_program_config(
+            self, use_trt=True,
+            precision_mode=paddle_infer.PrecisionType.Float32):
+        config = paddle_infer.Config()
+        config.enable_use_gpu(100, 0)
+        if use_trt:
+            config.enable_tensorrt_engine(
+                max_batch_size=self.trt_param.max_batch_size,
+                workspace_size=self.trt_param.workspace_size,
+                min_subgraph_size=self.trt_param.min_subgraph_size,
+                precision_mode=precision_mode,
+                use_static=self.trt_param.use_static,
+                use_calib_mode=self.trt_param.use_calib_mode)
+        return config
+
+    @abc.abstractmethod
+    def sample_predictor_configs(self):
+        yield self.create_program_config(use_trt=False)
+        yield self.create_program_config(
+            use_trt=True, precision_mode=self.trt_param.precision)
+        if self.trt_param.precision == paddle_infer.PrecisionType.Float32:
+            yield self.create_program_config(
+                use_trt=True, precision_mode=paddle_infer.PrecisionType.Half)