diff --git a/class/core/mw.py b/class/core/mw.py
index 6a9d6f392..47a0c9cdb 100755
--- a/class/core/mw.py
+++ b/class/core/mw.py
@@ -34,7 +34,14 @@ def execShell(cmdstring, cwd=None, timeout=None, shell=True):
             if end_time <= datetime.datetime.now():
                 raise Exception("Timeout：%s" % cmdstring)
 
-    return sub.communicate()
+    data = sub.communicate()
+    # python3 fix 返回byte数据
+    if isinstance(data[0], bytes):
+        t1 = str(data[0], encoding='utf-8')
+
+    if isinstance(data[1], bytes):
+        t2 = str(data[1], encoding='utf-8')
+    return (t1, t2)
 
 
 def getRunDir():
diff --git a/task.py b/task.py
index 146791f65..e0d296e03 100755
--- a/task.py
+++ b/task.py
@@ -80,8 +80,15 @@ def execShell(cmdstring, cwd=None, timeout=None, shell=True):
         while sub.poll() is None:
             time.sleep(0.1)
 
-        return sub.returncode
-    except:
+        data = sub.communicate()
+        # python3 fix 返回byte数据
+        if isinstance(data[0], bytes):
+            t1 = str(data[0], encoding='utf-8')
+
+        if isinstance(data[1], bytes):
+            t2 = str(data[1], encoding='utf-8')
+        return (t1, t2)
+    except Exception as e:
         return None