diff --git a/api/app/schemas/memory_storage_schema.py b/api/app/schemas/memory_storage_schema.py
index e396bbf6..046b79e7 100644
--- a/api/app/schemas/memory_storage_schema.py
+++ b/api/app/schemas/memory_storage_schema.py
@@ -275,8 +275,8 @@ class ConfigUpdateExtracted(BaseModel):  # 更新记忆萃取引擎配置参数
 
     # 剪枝配置：与 runtime.json 中 pruning 段对应
     pruning_enabled: Optional[bool] = Field(None, description="是否启动智能语义剪枝")
-    pruning_scene: Optional[Literal["education", "online_service", "outbound"]] = Field(
-        None, description="智能剪枝场景：education/online_service/outbound"
+    pruning_scene: Optional[str] = Field(
+        None, description="智能剪枝场景：education/online_service/outbound 或本体工程自定义场景"
     )
     pruning_threshold: Optional[float] = Field(
         None, ge=0.0, le=0.9, description="智能语义剪枝阈值（0-0.9）"