diff --git a/python/paddle_fl/mpc/examples/mnist_demo/prepare.py b/python/paddle_fl/mpc/examples/mnist_demo/prepare.py
new file mode 100644
index 0000000000000000000000000000000000000000..b569ba41e98ac0554aa58517f42cfbe79a465bc2
--- /dev/null
+++ b/python/paddle_fl/mpc/examples/mnist_demo/prepare.py
@@ -0,0 +1,21 @@
+# 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.
+"""
+Prepare data for MNIST.
+"""
+import process_data
+
+
+process_data.generate_encrypted_data()
+process_data.generate_encrypted_test_data()