diff --git a/rt-thread-version/rt-thread-standard/programming-manual/ipc1/ipc1.md b/rt-thread-version/rt-thread-standard/programming-manual/ipc1/ipc1.md
index 8e323259f9279ea3a882c9ea0f2e9d52d4a5fbae..f701f2977a482e8f54b4f25640ce2ed102464db5 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/ipc1/ipc1.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/ipc1/ipc1.md
@@ -1411,6 +1411,8 @@ static void thread1_recv_event(void *param)
     {
         rt_kprintf("thread1: AND recv event 0x%x\n", e);
     }
+    /* 执行完该事件集后进行事件集的脱离，事件集重复初始化会导致再次运行时，出现重复初始化的问题 */
+    rt_event_detach(&event);
     rt_kprintf("thread1 leave.\n");
 }
 
@@ -1477,8 +1479,18 @@ MSH_CMD_EXPORT(event_sample, event sample);
 ```c
  \ | /
 - RT -     Thread Operating System
- / | \     3.1.0 build Aug 24 2018
- 2006 - 2018 Copyright by rt-thread team
+ / | \     4.1.1 build Sep  5 2024 15:53:21
+ 2006 - 2022 Copyright by RT-Thread team
+msh >event_sample
+thread2: send event3
+thread1: OR recv event 0x8
+thread1: delay 1s to prepare the second event
+msh >thread2: send event5
+thread2: send event3
+thread2 leave.
+thread1: AND recv event 0x28
+thread1 leave.
+
 msh >event_sample
 thread2: send event3
 thread1: OR recv event 0x8