diff --git a/compat/posix/include/mqueue.h b/compat/posix/include/mqueue.h
index eb58bd06..123d5540 100644
--- a/compat/posix/include/mqueue.h
+++ b/compat/posix/include/mqueue.h
@@ -81,6 +81,11 @@ typedef union send_receive_t {
     short data;
 } mode_s;
 
+struct mqnotify {
+    pid_t pid;
+    struct sigevent notify;
+};
+
 /* TYPE DEFINITIONS */
 struct mqarray {
     UINT32 mq_id : 31;
@@ -91,6 +96,7 @@ struct mqarray {
     uid_t euid; /* euid of mqueue */
     gid_t egid; /* egid of mqueue */
     fd_set mq_fdset; /* mqueue sysFd bit map */
+    struct mqnotify mq_notify;
     LosQueueCB *mqcb;
     struct mqpersonal *mq_personal;
 };
@@ -418,6 +424,7 @@ extern ssize_t mq_timedreceive(mqd_t personal, char *msg, size_t msgLen,
                                unsigned int *msgPrio, const struct timespec *absTimeout);
 
 extern void mqueue_refer(int sysFd);
+extern int OsMqNotify(mqd_t personal, const struct sigevent *sigev);
 
 #ifdef __cplusplus
 #if __cplusplus
diff --git a/compat/posix/src/mqueue.c b/compat/posix/src/mqueue.c
index 9916b641..cfc9de38 100644
--- a/compat/posix/src/mqueue.c
+++ b/compat/posix/src/mqueue.c
@@ -120,6 +120,7 @@ STATIC INT32 DoMqueueDelete(struct mqarray *mqueueCB)
     mqueueCB->mode_data.data = 0;
     mqueueCB->euid = -1;
     mqueueCB->egid = -1;
+    mqueueCB->mq_notify.pid = 0;
 
     ret = LOS_QueueDelete(mqueueCB->mq_id);
     switch (ret) {
@@ -204,6 +205,7 @@ STATIC struct mqpersonal *DoMqueueCreate(const struct mq_attr *attr, const CHAR
     mqueueCB->mq_personal->mq_flags = (INT32)((UINT32)openFlag | ((UINT32)attr->mq_flags & (UINT32)FNONBLOCK));
     mqueueCB->mq_personal->mq_mode = mode;
     mqueueCB->mq_personal->mq_refcount = 0;
+    mqueueCB->mq_notify.pid = 0;
 
     return mqueueCB->mq_personal;
 ERROUT:
@@ -717,6 +719,35 @@ STATIC INLINE BOOL MqParamCheck(mqd_t personal, const char *msg, size_t msgLen)
     return TRUE;
 }
 
+/*
+ * Send realtime a signal to process which registered itself
+ * successfully by mq_notify.
+ */
+static void MqSendNotify(struct mqarray *mqueueCB)
+{
+    struct mqnotify *mqnotify = &mqueueCB->mq_notify;
+
+    if ((mqnotify->pid) && (mqueueCB->mqcb->readWriteableCnt[OS_QUEUE_READ] == 0)) {
+        siginfo_t info;
+
+        switch (mqnotify->notify.sigev_notify) {
+            case SIGEV_SIGNAL:
+                /* sends signal */
+                /* Create the siginfo structure */
+                info.si_signo = mqnotify->notify.sigev_signo;
+                info.si_code = SI_MESGQ;
+                info.si_value = mqnotify->notify.sigev_value;
+                OsDispatch(mqnotify->pid, &info, OS_USER_KILL_PERMISSION);
+                break;
+            case SIGEV_NONE:
+            default:
+                break;
+        }
+        /* after notification unregisters process */
+        mqnotify->pid = 0;
+    }
+}
+
 #define OS_MQ_GOTO_ERROUT_UNLOCK_IF(expr, errcode) \
     if (expr) {                        \
         errno = errcode;                 \
@@ -754,6 +785,10 @@ int mq_timedsend(mqd_t personal, const char *msg, size_t msgLen, unsigned int ms
     mqueueID = mqueueCB->mq_id;
     (VOID)pthread_mutex_unlock(&g_mqueueMutex);
 
+    if (LOS_ListEmpty(&mqueueCB->mqcb->readWriteList[OS_QUEUE_READ])) {
+        MqSendNotify(mqueueCB);
+    }
+
     err = LOS_QueueWriteCopy(mqueueID, (VOID *)msg, (UINT32)msgLen, (UINT32)absTicks);
     if (map_errno(err) != ENOERR) {
         goto ERROUT;
@@ -832,4 +867,82 @@ ssize_t mq_receive(mqd_t personal, char *msg_ptr, size_t msg_len, unsigned int *
     return mq_timedreceive(personal, msg_ptr, msg_len, msg_prio, NULL);
 }
 
+STATIC INLINE BOOL MqNotifyParamCheck(mqd_t personal, const struct sigevent *sigev)
+{
+    if (personal < 0) {
+        errno = EBADF;
+        goto ERROUT;
+    }
+
+    if (sigev != NULL) {
+        if (sigev->sigev_notify != SIGEV_NONE && sigev->sigev_notify != SIGEV_SIGNAL) {
+            errno = EINVAL;
+            goto ERROUT;
+        }
+        if (sigev->sigev_notify == SIGEV_SIGNAL && !GOOD_SIGNO(sigev->sigev_signo)) {
+            errno = EINVAL;
+            goto ERROUT;
+        }
+    }
+
+    return TRUE;
+ERROUT:
+    return FALSE;
+}
+
+int OsMqNotify(mqd_t personal, const struct sigevent *sigev)
+{
+    struct mqarray *mqueueCB = NULL;
+    struct mqnotify *mqnotify = NULL;
+    struct mqpersonal *privateMqPersonal = NULL;
+
+    if (!MqNotifyParamCheck(personal, sigev)) {
+        goto ERROUT;
+    }
+
+    (VOID)pthread_mutex_lock(&g_mqueueMutex);
+    privateMqPersonal = MqGetPrivDataBuff(personal);
+    if (privateMqPersonal == NULL) {
+        goto OUT_UNLOCK;
+    }
+
+    if (privateMqPersonal->mq_status != MQ_USE_MAGIC) {
+        errno = EBADF;
+        goto OUT_UNLOCK;
+    }
+
+    mqueueCB = privateMqPersonal->mq_posixdes;
+    mqnotify = &mqueueCB->mq_notify;
+
+    if (sigev == NULL) {
+        if (mqnotify->pid == LOS_GetCurrProcessID()) {
+            mqnotify->pid = 0;
+        }
+    } else if (mqnotify->pid != 0) {
+        errno = EBUSY;
+        goto OUT_UNLOCK;
+    } else {
+        switch (sigev->sigev_notify) {
+            case SIGEV_NONE:
+                mqnotify->notify.sigev_notify = SIGEV_NONE;
+                break;
+            case SIGEV_SIGNAL:
+                mqnotify->notify.sigev_signo = sigev->sigev_signo;
+                mqnotify->notify.sigev_value = sigev->sigev_value;
+                mqnotify->notify.sigev_notify = SIGEV_SIGNAL;
+                break;
+            default:
+                break;
+        }
+
+        mqnotify->pid = LOS_GetCurrProcessID();
+    }
+
+    (VOID)pthread_mutex_unlock(&g_mqueueMutex);
+    return 0;
+OUT_UNLOCK:
+    (VOID)pthread_mutex_unlock(&g_mqueueMutex);
+ERROUT:
+    return -1;
+}
 #endif
diff --git a/syscall/ipc_syscall.c b/syscall/ipc_syscall.c
index 2ebf7457..f0b3cfbd 100644
--- a/syscall/ipc_syscall.c
+++ b/syscall/ipc_syscall.c
@@ -87,6 +87,18 @@ int SysMqClose(mqd_t personal)
     return ret;
 }
 
+int SysMqNotify(mqd_t personal, const struct sigevent *sigev)
+{
+    int ret;
+
+    MQUEUE_FD_U2K(personal);
+    ret = OsMqNotify(personal, sigev);
+    if (ret < 0) {
+        return -get_errno();
+    }
+    return ret;
+}
+
 int SysMqGetSetAttr(mqd_t mqd, const struct mq_attr *new, struct mq_attr *old)
 {
     int ret;
diff --git a/syscall/los_syscall.h b/syscall/los_syscall.h
index f7334670..67df685e 100644
--- a/syscall/los_syscall.h
+++ b/syscall/los_syscall.h
@@ -125,6 +125,7 @@ extern int SysMqTimedSend(mqd_t personal, const char *msg, size_t msgLen, unsign
                           const struct timespec *absTimeout);
 extern ssize_t SysMqTimedReceive(mqd_t personal, char *msg, size_t msgLen, unsigned int *msgPrio,
                                  const struct timespec *absTimeout);
+extern int SysMqNotify(mqd_t personal, const struct sigevent *sigev);
 #endif
 
 extern int SysSigAction(int sig, const sigaction_t *restrict sa, sigaction_t *restrict old, size_t sigsetsize);
diff --git a/syscall/syscall_lookup.h b/syscall/syscall_lookup.h
index 44190732..4b714a32 100644
--- a/syscall/syscall_lookup.h
+++ b/syscall/syscall_lookup.h
@@ -216,6 +216,7 @@ SYSCALL_HAND_DEF(__NR_mq_open, SysMqOpen, mqd_t, ARG_NUM_4)
 SYSCALL_HAND_DEF(__NR_mq_unlink, SysMqUnlink, int, ARG_NUM_1)
 SYSCALL_HAND_DEF(__NR_mq_timedsend, SysMqTimedSend, int, ARG_NUM_5)
 SYSCALL_HAND_DEF(__NR_mq_timedreceive, SysMqTimedReceive, ssize_t, ARG_NUM_5)
+SYSCALL_HAND_DEF(__NR_mq_notify, SysMqNotify, int, ARG_NUM_2)
 SYSCALL_HAND_DEF(__NR_mq_getsetattr, SysMqGetSetAttr, int, ARG_NUM_3)
 
 #ifdef LOSCFG_NET_LWIP_SACK
diff --git a/testsuites/unittest/posix/mqueue/BUILD.gn b/testsuites/unittest/posix/mqueue/BUILD.gn
index 2c570c94..7bc49771 100644
--- a/testsuites/unittest/posix/mqueue/BUILD.gn
+++ b/testsuites/unittest/posix/mqueue/BUILD.gn
@@ -52,11 +52,6 @@ sources_smoke = [
   "smoke/It_posix_queue_028.cpp",
   "smoke/It_posix_queue_053.cpp",
   "smoke/It_posix_queue_062.cpp",
-  "smoke/It_posix_queue_205.cpp",
-  "smoke/It_posix_queue_206.cpp",
-  "smoke/It_posix_queue_207.cpp",
-  "smoke/It_posix_queue_208.cpp",
-  "smoke/It_posix_queue_209.cpp",
 ]
 
 sources_full = [
@@ -200,6 +195,11 @@ sources_full = [
   "full/It_posix_queue_202.cpp",
   "full/It_posix_queue_203.cpp",
   "full/It_posix_queue_204.cpp",
+  "full/It_posix_queue_205.cpp",
+  "full/It_posix_queue_206.cpp",
+  "full/It_posix_queue_207.cpp",
+  "full/It_posix_queue_208.cpp",
+  "full/It_posix_queue_209.cpp",
 ]
 
 if (LOSCFG_USER_TEST_LEVEL >= TEST_LEVEL_LOW) {
diff --git a/testsuites/unittest/posix/mqueue/It_posix_queue.h b/testsuites/unittest/posix/mqueue/It_posix_queue.h
index 85d9d308..06471361 100644
--- a/testsuites/unittest/posix/mqueue/It_posix_queue.h
+++ b/testsuites/unittest/posix/mqueue/It_posix_queue.h
@@ -120,11 +120,6 @@ VOID ItPosixQueue001(VOID);
 VOID ItPosixQueue003(VOID);
 VOID ItPosixQueue028(VOID);
 VOID ItPosixQueue062(VOID);
-VOID ItPosixQueue205(VOID);
-VOID ItPosixQueue206(VOID);
-VOID ItPosixQueue207(VOID);
-VOID ItPosixQueue208(VOID);
-VOID ItPosixQueue209(VOID);
 VOID ItPosixQueue053(VOID);
 VOID ItPosixQueue144(VOID);
 #endif
@@ -274,5 +269,10 @@ VOID ItPosixQueue202(VOID);
 VOID ItPosixQueue203(VOID);
 VOID ItPosixQueue204(VOID);
 
+VOID ItPosixQueue205(VOID);
+VOID ItPosixQueue206(VOID);
+VOID ItPosixQueue207(VOID);
+VOID ItPosixQueue208(VOID);
+VOID ItPosixQueue209(VOID);
 #endif
 #endif
diff --git a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_205.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_205.cpp
similarity index 100%
rename from testsuites/unittest/posix/mqueue/smoke/It_posix_queue_205.cpp
rename to testsuites/unittest/posix/mqueue/full/It_posix_queue_205.cpp
diff --git a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_206.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_206.cpp
similarity index 100%
rename from testsuites/unittest/posix/mqueue/smoke/It_posix_queue_206.cpp
rename to testsuites/unittest/posix/mqueue/full/It_posix_queue_206.cpp
diff --git a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_207.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_207.cpp
similarity index 100%
rename from testsuites/unittest/posix/mqueue/smoke/It_posix_queue_207.cpp
rename to testsuites/unittest/posix/mqueue/full/It_posix_queue_207.cpp
diff --git a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_208.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_208.cpp
similarity index 100%
rename from testsuites/unittest/posix/mqueue/smoke/It_posix_queue_208.cpp
rename to testsuites/unittest/posix/mqueue/full/It_posix_queue_208.cpp
diff --git a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_209.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_209.cpp
similarity index 100%
rename from testsuites/unittest/posix/mqueue/smoke/It_posix_queue_209.cpp
rename to testsuites/unittest/posix/mqueue/full/It_posix_queue_209.cpp
diff --git a/testsuites/unittest/posix/mqueue/posix_mqueue_test.cpp b/testsuites/unittest/posix/mqueue/posix_mqueue_test.cpp
index b49ce837..81df7893 100644
--- a/testsuites/unittest/posix/mqueue/posix_mqueue_test.cpp
+++ b/testsuites/unittest/posix/mqueue/posix_mqueue_test.cpp
@@ -1354,6 +1354,63 @@ HWTEST_F(PosixMqueueTest, ItPosixQueue204, TestSize.Level0)
 {
     ItPosixQueue204();
 }
+
 #endif
+
+/**
+ * @tc.name: IT_POSIX_QUEUE_205
+ * @tc.desc: function for mq_notify:Set sigev_notify to SIGEV_NONE
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(PosixMqueueTest, ItPosixQueue205, TestSize.Level0)
+{
+    ItPosixQueue205();
+}
+
+/**
+ * @tc.name: IT_POSIX_QUEUE_206
+ * @tc.desc: function for mq_notify:The function returns a failure and the error code is verified.
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(PosixMqueueTest, ItPosixQueue206, TestSize.Level0)
+{
+    ItPosixQueue206();
+}
+
+/**
+ * @tc.name: IT_POSIX_QUEUE_207
+ * @tc.desc: function for mq_notify:Set sigev_notify to SIGEV_NONE
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(PosixMqueueTest, ItPosixQueue207, TestSize.Level0)
+{
+    ItPosixQueue207();
+}
+
+/**
+ * @tc.name: IT_POSIX_QUEUE_208
+ * @tc.desc: function for mq_notify:The message queue is not empty.
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(PosixMqueueTest, ItPosixQueue208, TestSize.Level0)
+{
+    ItPosixQueue208();
+}
+
+/**
+ * @tc.name: IT_POSIX_QUEUE_209
+ * @tc.desc: function for mq_notify:The message queue has waiters.
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ **/
+HWTEST_F(PosixMqueueTest, ItPosixQueue209, TestSize.Level0)
+{
+    ItPosixQueue209();
+}
+
 #endif
 } // namespace OHOS