diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..ab2832a
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,35 @@
+# .gitattributes
+
+# Source files
+# ============
+*.pxd    text diff=python
+*.py     text diff=python
+*.py3    text diff=python
+*.pyw    text diff=python
+*.pyx    text diff=python
+*.pyz    text diff=python
+*.pyi    text diff=python
+
+# Binary files
+# ============
+*.db     binary
+*.p      binary
+*.pkl    binary
+*.pickle binary
+*.pyc    binary export-ignore
+*.pyo    binary export-ignore
+*.pyd    binary
+
+# Jupyter notebook
+*.ipynb  text
+
+# Model files
+*.bin.* filter=lfs diff=lfs merge=lfs -text
+*.lfs.* filter=lfs diff=lfs merge=lfs -text
+*.bin filter=lfs diff=lfs merge=lfs -text
+*.h5 filter=lfs diff=lfs merge=lfs -text
+*.tflite filter=lfs diff=lfs merge=lfs -text
+*.tar.gz filter=lfs diff=lfs merge=lfs -text
+*.ot filter=lfs diff=lfs merge=lfs -text
+*.onnx filter=lfs diff=lfs merge=lfs -text
+*.msgpack filter=lfs diff=lfs merge=lfs -text
\ No newline at end of file
diff --git a/README.md b/README.md
index 54bf8c4..4ce0c37 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,20 @@
-# resnet50-image-embedding
+# Image Embedding Operator with Resnet50
 
-This is another test repo
\ No newline at end of file
+Authors: name or github-name(email)
+
+## Overview
+
+Introduce the functions of op and the model used.
+
+## Interface
+
+The interface of all the functions in op. (input & output)
+
+## How to use
+
+- Requirements from requirements.txt
+- How it works in some typical pipelines and the yaml example.
+
+## Reference
+
+Model paper link.
diff --git a/__init__.py b/__init__.py
new file mode 100644
index 0000000..37f5bd7
--- /dev/null
+++ b/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2021 Zilliz. 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.
diff --git a/pytorch/__init__.py b/pytorch/__init__.py
new file mode 100644
index 0000000..37f5bd7
--- /dev/null
+++ b/pytorch/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2021 Zilliz. 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.
diff --git a/pytorch/requirements.txt b/pytorch/requirements.txt
new file mode 100644
index 0000000..ac3ffc1
--- /dev/null
+++ b/pytorch/requirements.txt
@@ -0,0 +1,2 @@
+torch>=1.2.0
+torchvision>=0.4.0
diff --git a/pytorch/resnet50.py b/pytorch/resnet50.py
new file mode 100644
index 0000000..7044957
--- /dev/null
+++ b/pytorch/resnet50.py
@@ -0,0 +1,40 @@
+# Copyright 2021 Zilliz. 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 torch
+import torchvision
+
+
+class Resnet50():
+    """
+    PyTorch model for image embedding.
+    """
+    def __init__(self, model_name: str):
+        self.model_name = model_name
+
+    def load_model(self):
+        """
+        For loading model
+        """
+        model_func = getattr(torchvision.models, self.model_name)
+        self.model = model_func(pretrained=True)
+        self.model.eval()
+        return self.model
+    
+    def train_model(self):
+        """
+        For training model
+        """
+        pass
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b0e64dd
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+numpy>=1.19.5
diff --git a/resnet50_image_embedding.py b/resnet50_image_embedding.py
new file mode 100644
index 0000000..ac484c0
--- /dev/null
+++ b/resnet50_image_embedding.py
@@ -0,0 +1,37 @@
+# Copyright 2021 Zilliz. 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 NamedTuple
+
+import numpy
+import torch
+import torchvision
+
+from towhee.operator import Operator
+from pytorch.resnet50 import Resnet50
+
+
+class Resnet50ImageEmbedding(Operator):
+    """
+    PyTorch model for image embedding.
+    """
+    def __init__(self, model_name: str) -> None:
+        super().__init__()
+        resnet50_image_embedding = Resnet50(model_name)
+        self._model = resnet50_image_embedding.load_model()
+
+    def __call__(self, img_tensor: torch.Tensor) -> NamedTuple('Outputs', [('cnn', numpy.ndarray)]):
+        Outputs = NamedTuple('Outputs', [('cnn', numpy.ndarray)])
+        return Outputs(self._model(img_tensor).detach().numpy())
diff --git a/resnet50_image_embedding.yaml b/resnet50_image_embedding.yaml
new file mode 100644
index 0000000..7d1a2ba
--- /dev/null
+++ b/resnet50_image_embedding.yaml
@@ -0,0 +1,13 @@
+name: 'resnet50-image-embedding'
+labels: 
+  recommended_framework: pytorch1.2.0
+  class: image-embedding
+  others: resnet50
+operator: 'towhee/resnet50-image-embedding'
+init:
+  model_name: str
+call:
+  input:
+    img_tensor: torch.Tensor
+  output:
+    cnn: numpy.ndarray
diff --git a/test_data/test.jpg b/test_data/test.jpg
new file mode 100755
index 0000000..8fdc2b3
Binary files /dev/null and b/test_data/test.jpg differ
diff --git a/test_resnet50_image_embedding.py b/test_resnet50_image_embedding.py
new file mode 100644
index 0000000..ea6bc08
--- /dev/null
+++ b/test_resnet50_image_embedding.py
@@ -0,0 +1,32 @@
+import os
+import unittest
+from PIL import Image
+from torchvision import transforms
+from resnet50_image_embedding import Resnet50ImageEmbedding
+
+
+class TestResnet50ImageEmbedding(unittest.TestCase):
+    """
+    Simple operator test
+    """
+    def test_image_embedding(self):
+        test_img = './test_data/test.jpg'
+        img = Image.open(test_img)
+        tfms = transforms.Compose(
+            [
+                transforms.Resize(256),
+                transforms.CenterCrop(224),
+                transforms.ToTensor(),
+                transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225]),
+            ]
+        )
+        img_tensor = tfms(img).unsqueeze(0)
+        model_name = 'resnet50'
+        dimension = 1000
+        op = Resnet50ImageEmbedding(model_name)
+        print("The output shape of operator:", op(img_tensor)[0].shape)
+        self.assertEqual((1, dimension), op(img_tensor)[0].shape)
+
+
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file