diff --git a/doc/23.CMSIS_RTOS_API_Use_Guide.md b/doc/23.CMSIS_RTOS_API_Use_Guide.md
index b01e8d7d..0402bf8f 100644
--- a/doc/23.CMSIS_RTOS_API_Use_Guide.md
+++ b/doc/23.CMSIS_RTOS_API_Use_Guide.md
@@ -806,7 +806,6 @@ void application_entry(void *arg)
 ```
 运行结果为：
 ```
-item size = 8 bytes, create ret = 0
 mmblk pool create success
 block size is 8 bytes
 a mmblk alloc success