diff --git a/coscmd/cos_client.py b/coscmd/cos_client.py
index 790b261..c995e34 100644
--- a/coscmd/cos_client.py
+++ b/coscmd/cos_client.py
@@ -498,6 +498,7 @@ def copy_folder(self, source_path, cos_path, _type='Standard'):
                         _cos_path = cos_path + _tmp[len(source_path):]
                     _cos_path = to_unicode(_cos_path)
                     _source_path = to_unicode(_source_path)
+
                     if _cos_path.endswith('/'):
                         continue
                     _file_num += 1
@@ -527,7 +528,7 @@ def single_copy():
                 try:
                     http_header = dict()
                     http_header['x-cos-storage-class'] = self._type
-                    http_header['x-cos-copy-source'] = source_path
+                    http_header['x-cos-copy-source'] = to_printable_str(source_path)
                     rt = self._session.put(url=url,
                                            auth=CosS3Auth(self._conf._secret_id, self._conf._secret_key), headers=http_header)
                     if rt.status_code == 200:
@@ -542,7 +543,8 @@ def single_copy():
                         continue
                     if j+1 == self._retry:
                         return False
-                except Exception:
+                except Exception,e:
+                    logger.warn(e)
                     logger.warn("copy file failed")
             return False
 
@@ -584,7 +586,7 @@ def source_path_parser():
                     logger.warn("Source path format error")
                 return source_bucket, source_appid, source_region, source_cospath
 
-            def copy_parts_data(local_path, offset, length, parts_size, idx):
+            def copy_parts_data(source_path, offset, length, parts_size, idx):
                 url = self._conf.uri(path=cos_path)+"?partNumber={partnum}&uploadId={uploadid}".format(partnum=idx, uploadid=self._upload_id)
                 http_header = dict()
                 http_header['x-cos-copy-source'] = source_path
@@ -790,7 +792,6 @@ def download_file(self, cos_path, local_path, _force=False):
                     dir_path = os.path.dirname(local_path)
                     if os.path.isdir(dir_path) is False and dir_path != '':
                         try:
-                            print dir_path
                             os.makedirs(dir_path)
                         except Exception as e:
                             logger.warn("unable to create the corresponding folder")
diff --git a/coscmd/test.py b/coscmd/test.py
index 542f5da..97e95da 100644
--- a/coscmd/test.py
+++ b/coscmd/test.py
@@ -114,6 +114,19 @@ def test_objectacl():
     op_int.put_object_acl("3210232098/327874225", "anyone", "", file_name)
     rt = op_int.get_object_acl(file_name)
     assert rt
+    
+def test_copy():
+    """test copy"""
+    if os.path.isdir('testfolder') is False:
+        os.mkdir('testfolder')
+    gen_file('testfolder/1中文', 1.1)
+    gen_file('testfolder/2中文', 2.1)
+    gen_file('testfolder/3中文', 3.1)
+    gen_file('testfolder/4中文', 4.1)
+    gen_file('testfolder/5中文', 5.1)
+    op_int.upload_folder('testfolder', 'testfolder')
+    op_int.copy_folder('lewzylu06-1252448703.cos.ap-beijing-1.myqcloud.com/testfolder', 'testfolder2')
+    shutil.rmtree('testfolder/')
 
 if __name__ == "__main__":
     tearDown()