diff --git a/x2paddle/convert.py b/x2paddle/convert.py
index e80f05adfd73371a98125e35f8f1107bf8bf0d49..7010828ab09d8ee67d1599a9cc46a11e2ebfa15c 100644
--- a/x2paddle/convert.py
+++ b/x2paddle/convert.py
@@ -125,11 +125,11 @@ def caffe2paddle(proto, weight, save_dir, caffe_proto):
     s = sys.version
     if s.startswith('2'):
         import commands
-        pb_version = commands.getstatusoutput('protoc --version')[1]
+        pb_version = commands.getstatusoutput('pip list | grep protobuf')[1]
     else:
         import subprocess
-        pb_version = subprocess.getstatusoutput('protoc --version')[1]
-    ver_str = pb_version.split(' ')[-1].replace('.', '')
+        pb_version = subprocess.getstatusoutput('pip list | grep protobuf')[1]
+    ver_str = pb_version.replace(' ', '').split('protobuf')[-1].replace('.', '')
     ver_int = int(ver_str)
     assert ver_int >= 360, 'The version of protobuf must be larger than 3.6.0!'
     print("Now translating model from caffe to paddle.")