diff --git a/config/ucloud.py b/config/ucloud.py
index af41e6d..44373b0 100644
--- a/config/ucloud.py
+++ b/config/ucloud.py
@@ -8,3 +8,5 @@ BUCKET = "drg100"
 UPLOAD_SUFFIX = ".cn-sh2.ufileos.com"
 # 下载后缀
 DOWNLOAD_SUFFIX = ".cn-sh2.ufileos.com"
+# 私空间文件地址过期时间(秒)
+PRIVATE_EXPIRES = 3600
diff --git a/ucloud/ucloud.py b/ucloud/ucloud.py
index 811e9b0..fce4417 100644
--- a/ucloud/ucloud.py
+++ b/ucloud/ucloud.py
@@ -3,14 +3,14 @@ import logging
 
 from ufile import filemanager
 
-from config.ucloud import PUBLIC_KEY, PRIVATE_KEY, UPLOAD_SUFFIX, DOWNLOAD_SUFFIX, BUCKET
+from config.ucloud import PUBLIC_KEY, PRIVATE_KEY, UPLOAD_SUFFIX, DOWNLOAD_SUFFIX, BUCKET, PRIVATE_EXPIRES
+
+UFILE_HANDLER = filemanager.FileManager(PUBLIC_KEY, PRIVATE_KEY, UPLOAD_SUFFIX, DOWNLOAD_SUFFIX)
 
 
-def get_private_url(key):
-    get_ufile_handler = filemanager.FileManager(PUBLIC_KEY, PRIVATE_KEY, UPLOAD_SUFFIX, DOWNLOAD_SUFFIX)
-
+def get_private_url(key, bucket=BUCKET):
     # 判断文件是否存在
-    _, resp = get_ufile_handler.head_file(BUCKET, key)
+    _, resp = UFILE_HANDLER.head_file(bucket, key)
     if resp.status_code != 200:
         logging.warning(f"uCloud中未找到({key})! status: {resp.status_code} error: {resp.error}")
         return None
@@ -19,15 +19,13 @@ def get_private_url(key):
     # url = get_ufile_handler.public_download_url(bucket, key)
 
     # 获取私有空间下载url, expires为下载链接有效期，单位为秒
-    url = get_ufile_handler.private_download_url(BUCKET, key, expires=3600)
+    url = UFILE_HANDLER.private_download_url(bucket, key, expires=PRIVATE_EXPIRES)
     return url
 
 
 def copy_file(source_bucket, source_key, target_bucket, target_key):
-    copy_ufile_handler = filemanager.FileManager(PUBLIC_KEY, PRIVATE_KEY, UPLOAD_SUFFIX, DOWNLOAD_SUFFIX)
-
     # 拷贝文件
-    ret, resp = copy_ufile_handler.copy(target_bucket, target_key, source_bucket, source_key)
+    ret, resp = UFILE_HANDLER.copy(target_bucket, target_key, source_bucket, source_key)
     if resp.status_code != 200:
         logging.warning(
             f"将({source_key})从({source_bucket})拷贝到({target_bucket})失败! status: {resp.status_code} error: {resp.error}")
@@ -35,11 +33,9 @@ def copy_file(source_bucket, source_key, target_bucket, target_key):
     return True
 
 
-def upload_file(key, file_path):
-    putufile_handler = filemanager.FileManager(PUBLIC_KEY, PRIVATE_KEY, UPLOAD_SUFFIX, DOWNLOAD_SUFFIX)
-
+def upload_file(key, file_path, bucket=BUCKET):
     # 普通上传文件至空间
-    ret, resp = putufile_handler.putfile(BUCKET, key, file_path, header=None)
+    ret, resp = UFILE_HANDLER.putfile(bucket, key, file_path, header=None)
     if resp.status_code != 200:
         logging.warning(f"上传({key})失败! status: {resp.status_code} error: {resp.error}")
         return False