diff --git a/img2bin/img2bin.py b/img2bin/img2bin.py
index ff934af..2f149e4 100644
--- a/img2bin/img2bin.py
+++ b/img2bin/img2bin.py
@@ -32,12 +32,10 @@
 #   =======================================================================
 from __future__ import print_function
 import argparse
-
-import json
 import os
 import sys
-import getpass
-
+import json
+# import getpass
 try:
     import cv2 as cv 
 except:
@@ -48,23 +46,36 @@ except:
         print("[ERROR] Please use the root user to execute this script again")
         exit(0)
     '''
-    print('[info] begin to install opencv-python...') 
     if sys.version_info.major == 2:
-        import ConfigParser as configparser
-        ret = os.system('sudo yum install -y opencv-python')
-        if ret != 0:
-            ret = os.system('sudo apt-get install -y python-opencv')
+        confirm = raw_input("[info] Begin to install opencv-python, input[Y/N]:")
+    else:
+        confirm = input("[info] Begin to install opencv-python, input[Y/N]:")
+    
+    if confirm == 'Y' or confirm == 'y':
+        print('[info] Starting to install opencv-python...') 
+        if sys.version_info.major == 2:
+            import commands
+            import ConfigParser as configparser
+            ret, output = commands.getstatusoutput("sudo yum install -y opencv-python")
+            # ret =  os.popen('sudo yum install -y opencv-python')
+            if ret != 0:
+                # ret = os.popen('sudo apt-get install -y python-opencv')
+                ret, output = commands.getstatusoutput("sudo apt-get install -y python-opencv")
+                if ret != 0:
+                    print('[ERROR] install opencv-python failed,please check env.')
+                    exit(0)
+        else:
+            import configparser
+            ret = os.system('python3.7.5 -m pip install opencv-python  -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com')
             if ret != 0:
                 print('[ERROR] install opencv-python failed,please check env.')
                 exit(0)
-    else:
-        import configparser
-        ret = os.system('python3.7.5 -m pip install opencv-python  -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com')
-        if ret != 0:
-            print('[ERROR] install opencv-python failed,please check env.')
-            exit(0)
         
-    import cv2 as cv
+        import cv2 as cv
+    else:
+        print("[info] The installation has been cancled.")
+        exit(0)
+    
 try:
     import numpy as np  
 except:
@@ -77,9 +88,9 @@ except:
 def get_args():
     parser = argparse.ArgumentParser(
         conflict_handler='resolve',
-        description='''eg1: python2 imgtobin.py
+        description='''eg1: python2 img2bin.py
          -i ./images -w 416 -h 416 -f BGR -a NHWC -t uint8 -m [104,117,123] -c [1,1,1] -o ./out 
-         eg2: python2 imgtobin.py -i ./test.txt -t uint8 -o ./out''')
+         eg2: python2 img2bin.py -i ./test.txt -t uint8 -o ./out''')
     parser.add_argument('-i', '--input', required=True, type=str, \
         help='folder of input image or file of other input.')
     parser.add_argument('-w', '--width', type=int, \
@@ -266,7 +277,7 @@ def main():
                 process(args, file_path)  
         else:
             process(args, args.input)    
-    print("[info] bin file generated successfully.")
+        print("[info] bin file generated successfully.")
 
 if __name__ == '__main__':
     main()