diff --git a/lightrag/base.py b/lightrag/base.py
index 2dc7b035..79cc5639 100644
--- a/lightrag/base.py
+++ b/lightrag/base.py
@@ -135,10 +135,6 @@ class BaseKVStorage(StorageNameSpace, ABC):
     async def upsert(self, data: dict[str, dict[str, Any]]) -> None:
         """Upsert data"""
 
-    @abstractmethod
-    async def drop(self) -> None:
-        """Drop the storage"""
-
 
 @dataclass
 class BaseGraphStorage(StorageNameSpace, ABC):
diff --git a/lightrag/kg/json_kv_impl.py b/lightrag/kg/json_kv_impl.py
index 0566fb26..7e13dea7 100644
--- a/lightrag/kg/json_kv_impl.py
+++ b/lightrag/kg/json_kv_impl.py
@@ -50,6 +50,3 @@ class JsonKVStorage(BaseKVStorage):
         for doc_id in ids:
             self._data.pop(doc_id, None)
         await self.index_done_callback()
-
-    async def drop(self) -> None:
-        self._data = {}
diff --git a/lightrag/kg/mongo_impl.py b/lightrag/kg/mongo_impl.py
index 87c9f9f1..8cfc84b9 100644
--- a/lightrag/kg/mongo_impl.py
+++ b/lightrag/kg/mongo_impl.py
@@ -117,10 +117,6 @@ class MongoKVStorage(BaseKVStorage):
         # Mongo handles persistence automatically
         pass
 
-    async def drop(self) -> None:
-        """Drop the collection"""
-        await self._data.drop()
-
 
 @final
 @dataclass
@@ -202,10 +198,6 @@ class MongoDocStatusStorage(DocStatusStorage):
         # Mongo handles persistence automatically
         pass
 
-    async def drop(self) -> None:
-        """Drop the collection"""
-        await self._data.drop()
-
 
 @final
 @dataclass
diff --git a/lightrag/kg/redis_impl.py b/lightrag/kg/redis_impl.py
index 3b8ebee4..056fbc9e 100644
--- a/lightrag/kg/redis_impl.py
+++ b/lightrag/kg/redis_impl.py
@@ -61,8 +61,3 @@ class RedisKVStorage(BaseKVStorage):
     async def index_done_callback(self) -> None:
         # Redis handles persistence automatically
         pass
-
-    async def drop(self) -> None:
-        keys = await self._redis.keys(f"{self.namespace}:*")
-        if keys:
-            await self._redis.delete(*keys)