diff --git a/doc/PERFORMANCE_OPTIM.md b/doc/PERFORMANCE_OPTIM.md
index 651be1c139b5960fa287fc3e981f3039f9f098a2..3d7ce09b8eeef302056dc40579055bc15bb07d19 100644
--- a/doc/PERFORMANCE_OPTIM.md
+++ b/doc/PERFORMANCE_OPTIM.md
@@ -16,5 +16,5 @@ Parameters for performance optimization:
 
 | Parameters | Type | Default | Description                                                  |
 | ---------- | ---- | ------- | ------------------------------------------------------------ |
-| mem_optim  | - | - | Enable memory / graphic memory optimization                                   |
+| mem_optim_off  | - | - | Disable memory / graphic memory optimization                                   |
 | ir_optim   | - | -  | Enable analysis and optimization of calculation graph,including OP fusion, etc |
diff --git a/doc/PERFORMANCE_OPTIM_CN.md b/doc/PERFORMANCE_OPTIM_CN.md
index c35ea7a11c40ad2a5752d9add8fd8d9f8ddb2b64..6e1cfb526adf424c066553d4ea7c47a27dd8a555 100644
--- a/doc/PERFORMANCE_OPTIM_CN.md
+++ b/doc/PERFORMANCE_OPTIM_CN.md
@@ -16,5 +16,5 @@
 
 | 参数      | 类型 | 默认值 | 含义                      |
 | --------- | ---- | ------ | -------------------------------- |
-| mem_optim | - | -  | 开启内存/显存优化                |
+| mem_optim_off | - | -  | 关闭内存/显存优化                |
 | ir_optim  | - | -  | 开启计算图分析优化，包括OP融合等 |