diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 89966985..05ffb43a 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -48,7 +48,7 @@ repos:
                --suppress=unusedFunction, --suppress=unusedStructMember,
                --suppress=noExplicitConstructor, --suppress=useStlAlgorithm,
                --suppress=constParameterPointer, --suppress=constParameterCallback,
-               --suppress=constVariablePointer,
+               --suppress=constVariablePointer, --suppress=redundantAssignment,
                -I Inc -I App -I Drivers/BSP,
                -I Drivers/STM32F4xx_HAL_Driver/Inc -I Drivers/CMSIS/Include,
                -I Middlewares/Third_Party/FreeRTOS/Source/include]
diff --git a/docs/pre-commit使用说明.md b/docs/pre-commit使用说明.md
index dbcbe7da..22e4bd2d 100644
--- a/docs/pre-commit使用说明.md
+++ b/docs/pre-commit使用说明.md
@@ -142,6 +142,7 @@ cppcheck 是开源 C/C++ 静态分析工具，**不运行代码**，通过语法
 | `constVariablePointer` | 局部指针加 const 是好习惯，但当前代码量大、改动多 | 暂时 |
 | `unusedFunction` | CubeMX 生成的弱符号、第三方库回调被误报 | 永久 |
 | `unusedStructMember` | HAL 寄存器位域按位操作，cppcheck 不理解 | 永久 |
+| `redundantAssignment` | HAL 清标志宏（如 `__HAL_SPI_CLEAR_OVRFLAG`）读寄存器覆盖旧值，cppcheck 不理解"读即目的" | 永久 |
 
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