diff --git a/README.en.md b/README.en.md
index 6a2f73359444fa011b903847cd6e1a52fb6bfd58..3c3b4243f953e7267befa7c48684682a30182e98 100644
--- a/README.en.md
+++ b/README.en.md
@@ -26,7 +26,7 @@ npu-smi info
 
 Ubuntu 16.04 or CentOS 7.0
 Python >= 3.5.2 (Python 2 is not supported)
-tensorflow >= 1.12
+tensorflow >= 1.14
 caffe == 1.0
 
 ### Directory Structure
diff --git a/README.zh.md b/README.zh.md
index 021f3e115df4038c3706e6358f3c95dd776779e0..1ea88b7c82ca542cf717294b9376bb725a8e0faa 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -24,7 +24,7 @@ npu-smi info
 
 Ubuntu 16.04 或 CentOS 7.0
 Python >= 3.5.2 (Python 2 is not supported)
-tensorflow >= 1.12
+tensorflow >= 1.14
 caffe == 1.0
 
 ### 目录结构
diff --git a/main.py b/main.py
index cd9c3e049dee67a185264b713eeca6f68611225d..2daeb4c22de4696e27bac12992f8ad36e09cbc77 100644
--- a/main.py
+++ b/main.py
@@ -1,13 +1,8 @@
 import configparser
 import os
 import shutil
-from caffe_impl.caffe_compare import CaffeCompare
-from tensorflow.python.util import deprecation
-from tf_impl.tf_basic_compare import TensorflowBasicCompare
 from utils.convert2davinci import convert_model
 
-deprecation._PRINT_DEPRECATION_WARNINGS = False
-
 
 def parameter_check(config):
     '''check the params in user.config'''
@@ -182,9 +177,11 @@ if __name__ == '__main__':
         exit()
 
     if user_config_dict['framework_name'].lower() == 'tensorflow':
+        from tf_impl.tf_basic_compare import TensorflowBasicCompare
         tf_compare_instance = TensorflowBasicCompare(user_config_dict)
         tf_compare_instance.run()
     elif user_config_dict['framework_name'].lower() == 'caffe':
+        from caffe_impl.caffe_compare import CaffeCompare
         caffe_compare_instance = CaffeCompare(user_config_dict)
         caffe_compare_instance.run()
     else: