diff --git a/vectorstores/MyFAISS.py b/vectorstores/MyFAISS.py
index 2e575d5..3853857 100644
--- a/vectorstores/MyFAISS.py
+++ b/vectorstores/MyFAISS.py
@@ -129,8 +129,10 @@ class MyFAISS(FAISS, VectorStore):
             if len(ids) == 0:
                 return f"docs delete fail"
             else:
+                _reversed_index = {v: k for k, v in self.index_to_docstore_id.items()}
+                index_to_delete = [_reversed_index[i] for i in ids]
                 # 从 self.index 中删除对应id
-                self.index.remove_ids(np.array(ids, dtype=np.int64))
+                self.index.remove_ids(np.array(index_to_delete, dtype=np.int64))
                 for id in ids:
                     index = list(self.index_to_docstore_id.keys())[list(self.index_to_docstore_id.values()).index(id)]
                     self.index_to_docstore_id.pop(index)