diff --git a/examples/kernel/SConscript b/examples/kernel/SConscript
index 1e7a057e4c..f07ccbb84b 100644
--- a/examples/kernel/SConscript
+++ b/examples/kernel/SConscript
@@ -21,6 +21,7 @@ semaphore_producer_consumer.c
 mutex_simple.c
 event_simple.c
 mbox_simple.c
+mbox_send_wait.c
 messageq_simple.c
 timer_static.c
 timer_dynamic.c
diff --git a/examples/kernel/mbox_send_wait.c b/examples/kernel/mbox_send_wait.c
new file mode 100644
index 0000000000..569e8f0745
--- /dev/null
+++ b/examples/kernel/mbox_send_wait.c
@@ -0,0 +1,141 @@
+/*
+ * 程序清单：邮箱例程_发送阻塞
+ *
+ * 这个程序用来测试邮箱发送时候的阻塞情况。
+ *
+ */
+#include <rtthread.h>
+#include "tc_comm.h"
+
+/* 指向线程控制块的指针 */
+static rt_thread_t tid1 = RT_NULL;
+static rt_thread_t tid2 = RT_NULL;
+
+/* 邮箱控制块 */
+static struct rt_mailbox mb;
+/* 用于放邮件的内存池 */
+static char mb_pool[32];
+
+static char mb_str1[] = "I'm a mail!";
+static char mb_str2[] = "this is another mail!";
+
+/* 线程1入口 */
+static void thread1_entry(void* parameter)
+{
+	unsigned char* str;
+
+	while (1)
+	{
+		/* 从邮箱中收取邮件 */
+		if (rt_mb_recv(&mb, (rt_uint32_t*)&str, RT_WAITING_FOREVER) == RT_EOK)
+		{
+			rt_kprintf("thread1: get a mail from mailbox, the content:%s\n", str);
+
+			/* 延时20个OS Tick */
+			rt_thread_delay(50);
+		}
+	}
+}
+
+/* 线程2入口 */
+static void thread2_entry(void* parameter)
+{
+	rt_uint8_t count;
+    unsigned char  *str;
+
+	count = 0;
+	while (1)
+	{
+		count ++;
+		if (count & 0x1)
+		{
+			/* 发送mb_str1地址到邮箱中 */
+            str = mb_str1;
+		}
+		else
+		{
+			/* 发送mb_str2地址到邮箱中 */
+            str = mb_str2;
+		}
+
+        /* 不停的发送邮件，如果满了则等待10个tick，然后超时 */
+        if( rt_mb_send_wait(&mb, (rt_uint32_t)str,10) == RT_EOK )
+            rt_kprintf("thread2: sent a mail to mailbox, the content:%s\n", str);
+        else
+            rt_kprintf("thread2: timeout while waiting to send a mail.\n");
+	}
+}
+
+int mbox_send_wait_init()
+{
+	/* 初始化一个mailbox */
+	rt_mb_init(&mb,
+		"mbt",             /* 名称是mbt */
+		&mb_pool[0],       /* 邮箱用到的内存池是mb_pool */
+		sizeof(mb_pool)/4,   /* 大小是mb_pool大小除以4，因为一封邮件的大小是4字节 */
+		RT_IPC_FLAG_FIFO); /* 采用FIFO方式进行线程等待 */
+
+	/* 创建线程1 */
+	tid1 = rt_thread_create("t1",
+		thread1_entry, RT_NULL, /* 线程入口是thread1_entry, 入口参数是RT_NULL */
+		THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+	if (tid1 != RT_NULL)
+		rt_thread_startup(tid1);
+	else
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+	/* 创建线程2 */
+	tid2 = rt_thread_create("t2",
+		thread2_entry, RT_NULL, /* 线程入口是thread2_entry, 入口参数是RT_NULL */
+		THREAD_STACK_SIZE, THREAD_PRIORITY, THREAD_TIMESLICE);
+	if (tid2 != RT_NULL)
+		rt_thread_startup(tid2);
+	else
+		tc_stat(TC_STAT_END | TC_STAT_FAILED);
+
+	return 0;
+}
+
+#ifdef RT_USING_TC
+static void _tc_cleanup()
+{
+	/* 调度器上锁，上锁后，将不再切换到其他线程，仅响应中断 */
+	rt_enter_critical();
+
+	/* 删除线程 */
+	if (tid1 != RT_NULL && tid1->stat != RT_THREAD_CLOSE)
+		rt_thread_delete(tid1);
+	if (tid2 != RT_NULL && tid2->stat != RT_THREAD_CLOSE)
+		rt_thread_delete(tid2);
+
+	/* 执行邮箱对象脱离 */
+	rt_mb_detach(&mb);
+
+	/* 调度器解锁 */
+	rt_exit_critical();
+
+	/* 设置TestCase状态 */
+	tc_done(TC_STAT_PASSED);
+}
+
+int _tc_mbox_send_wait()
+{
+	/* 设置TestCase清理回调函数 */
+	tc_cleanup(_tc_cleanup);
+	mbox_send_wait_init();
+
+	/* 返回TestCase运行的最长时间 */
+	return 300;
+}
+/* 输出函数命令到finsh shell中 */
+FINSH_FUNCTION_EXPORT(_tc_mbox_send_wait, a example of mailbox send wait);
+#else
+/* 用户应用入口 */
+int rt_application_init()
+{
+	mbox_send_wait_init();
+
+	return 0;
+}
+#endif
+
diff --git a/include/rtthread.h b/include/rtthread.h
index 15b5a03b18..7793663873 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -248,6 +248,7 @@ rt_mailbox_t rt_mb_create (const char* name, rt_size_t size, rt_uint8_t flag);
 rt_err_t rt_mb_delete (rt_mailbox_t mb);
 
 rt_err_t rt_mb_send (rt_mailbox_t mb, rt_uint32_t value);
+rt_err_t rt_mb_send_wait (rt_mailbox_t mb, rt_uint32_t value, rt_int32_t timeout);
 rt_err_t rt_mb_recv (rt_mailbox_t mb, rt_uint32_t* value, rt_int32_t timeout);
 rt_err_t rt_mb_control(rt_mailbox_t mb, rt_uint8_t cmd, void* arg);
 #endif