diff --git a/kernel/core/include/tos_mmblk.h b/kernel/core/include/tos_mmblk.h
index 4761444b..2fd8f4de 100644
--- a/kernel/core/include/tos_mmblk.h
+++ b/kernel/core/include/tos_mmblk.h
@@ -68,15 +68,13 @@ __API__ k_err_t tos_mmblk_pool_create(k_mmblk_pool_t *mbp, void *pool_start, siz
 __API__ k_err_t tos_mmblk_pool_destroy(k_mmblk_pool_t *mbp);
 
 /**
- * @brief Create a memory manage block pool.
- * Create a memory manage block pool.
+ * @brief Allocate a memory manage block.
+ * Allocate a memory manage block.
  *
  * @attention None
  *
  * @param[in]   mbp         pointer to the memory block pool handler.
- * @param[in]   pool_start  start address of the pool.
- * @param[in]   blk_num     number of the blocks in the pool.
- * @param[in]   blk_size    size of each block in the pool.
+ * @param[in]   blk         start address of the memory manage block.
  *
  * @return  errcode
  * @retval  #K_ERR_MMBLK_POOL_EMPTY   the pool is empty.
@@ -85,15 +83,13 @@ __API__ k_err_t tos_mmblk_pool_destroy(k_mmblk_pool_t *mbp);
 __API__ k_err_t tos_mmblk_alloc(k_mmblk_pool_t *mbp, void **blk);
 
 /**
- * @brief Create a memory manage block pool.
- * Create a memory manage block pool.
+ * @brief Free a memory manage block.
+ * Free a memory manage block.
  *
  * @attention None
  *
  * @param[in]   mbp         pointer to the memory block pool handler.
- * @param[in]   pool_start  start address of the pool.
- * @param[in]   blk_num     number of the blocks in the pool.
- * @param[in]   blk_size    size of each block in the pool.
+ * @param[in]   blk         start address of the memory manage block.
  *
  * @return  errcode
  * @retval  #K_ERR_MMBLK_POOL_FULL    the pool is full.