diff --git a/mcs/api/bucket_api.py b/mcs/api/bucket_api.py
index a667219..2af0959 100644
--- a/mcs/api/bucket_api.py
+++ b/mcs/api/bucket_api.py
@@ -147,7 +147,7 @@ def list_files(self, bucket_name, prefix='', limit='10', offset="0"):
             return False
 
 
-    def upload_file(self, bucket_name, object_name, file_path):
+    def upload_file(self, bucket_name, object_name, file_path, replace=False):
         prefix, file_name = object_to_filename(object_name)
         bucket_id = self._get_bucket_id(bucket_name)
         if os.stat(file_path).st_size == 0:
@@ -160,6 +160,10 @@ def upload_file(self, bucket_name, object_name, file_path):
         if result is None:
             logging.error("\033[31mCan't find this bucket\033[0m")
             return
+        # Replace file if already existed
+        if result[['data']['file_is_exist']] and replace:
+            self.delete_file(bucket_name, object_name)
+            result = self._check_file(bucket_id, file_hash, file_name, prefix)
         if not (result['data']['file_is_exist']):
             if not (result['data']['ipfs_is_exist']):
                 with open(file_path, 'rb') as file: