diff --git a/rt-thread-version/rt-thread-standard/programming-manual/memory/memory.md b/rt-thread-version/rt-thread-standard/programming-manual/memory/memory.md
index 24e0696dcd98ed642f7ed2584d12dd60493c88ed..8cbba3a3cecca15c8652e95ef3fd9bdd7ca0c6f4 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/memory/memory.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/memory/memory.md
@@ -466,7 +466,7 @@ rt_err_t rt_mp_delete(rt_mp_t mp);
 rt_err_t rt_mp_init(rt_mp_t mp,
                         const char* name,
                         void *start, rt_size_t size,
-                        rt_size_t block size);
+                        rt_size_t block_size);
 ```
 
 初始化内存池时，把需要进行初始化的内存池对象传递给内核，同时需要传递的还有内存池用到的内存空间，以及内存池管理的内存块数目和块大小，并且给内存池指定一个名称。这样，内核就可以对该内存池进行初始化，将内存池用到的内存空间组织成可用于分配的空闲块链表。下表描述了该函数的输入参数与返回值：