diff --git a/env.example b/env.example
index db7a4f2..41bb482 100644
--- a/env.example
+++ b/env.example
@@ -271,26 +271,28 @@ RAG_MAX_CONTEXT_TOKENS=3000
 
 # ====== 存储后端配置 ======
 # LightRAG 存储层配置（必须与 docker-compose 中的服务匹配）
+# 完整支持列表参考：https://github.com/HKUDS/LightRAG
 
 # --- Vector Storage ---
 # 用于存储文档向量和语义检索
-# 可选值: QdrantVectorDBStorage, MilvusVectorDBStorage, PGVectorStorage, etc.
+# 支持: NanoVectorDBStorage, MilvusVectorDBStorage, PGVectorStorage,
+#       FaissVectorDBStorage, QdrantVectorDBStorage, MongoVectorDBStorage
 VECTOR_STORAGE=QdrantVectorDBStorage
 
 # --- Key-Value Storage ---
 # 用于缓存和临时数据存储
-# 可选值: RedisKVStorage, JsonKVStorage
+# 支持: JsonKVStorage, RedisKVStorage, PGKVStorage, MongoKVStorage
 KV_STORAGE=RedisKVStorage
 
 # --- Graph Storage ---
 # 用于存储知识图谱（实体和关系）
-# 可选值: MemgraphStorage, Neo4JStorage
+# 支持: NetworkXStorage, Neo4JStorage, PGGraphStorage, MongoGraphStorage, MemgraphStorage
 GRAPH_STORAGE=MemgraphStorage
 
 # --- Document Status Storage ---
 # 用于存储文档处理状态和追踪信息
-# 推荐值: RedisDocStatusStorage（生产环境）, JsonDocStatusStorage（开发环境）
-# 其他支持: MongoDocStatusStorage, PGDocStatusStorage
+# 支持: JsonDocStatusStorage, RedisDocStatusStorage, PGDocStatusStorage, MongoDocStatusStorage
+# 推荐: RedisDocStatusStorage（生产环境）, JsonDocStatusStorage（开发环境）
 DOC_STATUS_STORAGE=RedisDocStatusStorage
 
 # ====== 可选配置 ======
diff --git a/src/config.py b/src/config.py
index 0d1f8f5..10b33b8 100644
--- a/src/config.py
+++ b/src/config.py
@@ -168,22 +168,37 @@ class StorageConfig(BaseSettings):
     )
     kv_storage: str = Field(
         default="RedisKVStorage",
-        description="KV Storage Type",
+        description=(
+            "KV Storage Type. "
+            "Supported: JsonKVStorage, RedisKVStorage, PGKVStorage, MongoKVStorage"
+        ),
         alias="KV_STORAGE"
     )
     vector_storage: str = Field(
-        default="QdrantStorage",
-        description="Vector Storage Type",
+        default="QdrantVectorDBStorage",
+        description=(
+            "Vector Storage Type. "
+            "Supported: NanoVectorDBStorage, MilvusVectorDBStorage, PGVectorStorage, "
+            "FaissVectorDBStorage, QdrantVectorDBStorage, MongoVectorDBStorage"
+        ),
         alias="VECTOR_STORAGE"
     )
     graph_storage: str = Field(
         default="MemgraphStorage",
-        description="Graph Storage Type",
+        description=(
+            "Graph Storage Type. "
+            "Supported: NetworkXStorage, Neo4JStorage, PGGraphStorage, "
+            "MongoGraphStorage, MemgraphStorage"
+        ),
         alias="GRAPH_STORAGE"
     )
     doc_status_storage: str = Field(
         default="RedisDocStatusStorage",
-        description="Document Status Storage Type",
+        description=(
+            "Document Status Storage Type. "
+            "Supported: JsonDocStatusStorage, RedisDocStatusStorage, "
+            "PGDocStatusStorage, MongoDocStatusStorage"
+        ),
         alias="DOC_STATUS_STORAGE"
     )
     redis_uri: str = Field(