diff --git a/testsuites/unittest/common/include/osTest.h b/testsuites/unittest/common/include/osTest.h
index 0623b40a8a5948e243c37586c83737f66531df1c..3ee6fb5d79f8f770435a819bea3c40b962fcbf17 100644
--- a/testsuites/unittest/common/include/osTest.h
+++ b/testsuites/unittest/common/include/osTest.h
@@ -132,6 +132,7 @@ extern void TestBusyTaskDelay(UINT32 tick);
 extern void *malloc(size_t size);
 extern void TEST_DumpCpuid(void);
 extern u_long T_random(void);
+extern VOID TestAssertWaitDelay(UINT32 *testCount, UINT32 flag);
 
 UINT32 LosTaskDelay(UINT32 tick);
 #define TEST_HwiDelete(ID) TEST_TEST_HwiDelete(ID, NULL)
diff --git a/testsuites/unittest/common/osTest.cpp b/testsuites/unittest/common/osTest.cpp
index a771a147dffcb3f44fd92467e766b703b9f7a535..0c02e5e6998cf8862add2de6463f770dba096f48 100644
--- a/testsuites/unittest/common/osTest.cpp
+++ b/testsuites/unittest/common/osTest.cpp
@@ -215,6 +215,13 @@ VOID TestAssertBusyTaskDelay(UINT32 timeout, UINT32 flag)
     }
 }
 
+VOID TestAssertWaitDelay(UINT32 *testCount, UINT32 flag)
+{
+    while (*testCount != flag) {
+    usleep(1);
+    }
+}
+
 UINT32 PosixPthreadInit(pthread_attr_t *attr, int pri)
 {
     UINT32 uwRet = 0;
diff --git a/testsuites/unittest/posix/mqueue/full/It_posix_queue_075.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_075.cpp
index 137b60a23739e4674884b87269b3017883fe7002..2fea2090305a917e6261755a9603579cb8bef332 100644
--- a/testsuites/unittest/posix/mqueue/full/It_posix_queue_075.cpp
+++ b/testsuites/unittest/posix/mqueue/full/It_posix_queue_075.cpp
@@ -29,6 +29,7 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "It_posix_queue.h"
+static int g_testFlag = 0;
 
 static VOID *PthreadF01(VOID *arg)
 {
@@ -37,12 +38,12 @@ static VOID *PthreadF01(VOID *arg)
     CHAR msgrcd[MQUEUE_STANDARD_NAME_LENGTH] = {0};
     struct timespec ts = { 0 };
     ts.tv_sec = 0xffff;
-
     for (i = 0; i < MQUEUE_STANDARD_NAME_LENGTH * 2; i++) { // 2, The loop frequency name length.
         ret = mq_timedreceive(g_gqueue, msgrcd, MQUEUE_STANDARD_NAME_LENGTH, NULL, &ts);
         ICUNIT_GOTO_EQUAL(ret, MQUEUE_SHORT_ARRAY_LENGTH, ret, EXIT);
         ICUNIT_GOTO_STRING_EQUAL(msgrcd, MQUEUE_SEND_STRING_TEST, msgrcd, EXIT);
     }
+    g_testFlag = 0; // 0 means the sub thread has executed
     return NULL;
 EXIT:
     return NULL;
@@ -62,6 +63,7 @@ static UINT32 Testcase(VOID)
     attr.mq_msgsize = MQUEUE_STANDARD_NAME_LENGTH;
     attr.mq_maxmsg = MQUEUE_STANDARD_NAME_LENGTH;
 
+    g_testFlag = 1; // 1 initialize the flag
     LOS_TaskLock();
     snprintf(mqname, MQUEUE_STANDARD_NAME_LENGTH, "/mq075_%d", LosCurTaskIDGet());
 
@@ -85,7 +87,10 @@ static UINT32 Testcase(VOID)
         ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT1);
     }
 
-    TestExtraTaskDelay(10); // 10, Set delay time.
+    // waitting for the flag is 0, means the sub thread has executed
+    while (g_testFlag) {
+        usleep(1);
+    }
 
     ret = mq_close(g_gqueue);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT1);
diff --git a/testsuites/unittest/posix/mqueue/full/It_posix_queue_097.cpp b/testsuites/unittest/posix/mqueue/full/It_posix_queue_097.cpp
index e11c5034a6faf9f2ae6e1ec85cdb4a7478cd3972..00fad7b1b9619fd5b5e3253b5ede3ae792a6094c 100644
--- a/testsuites/unittest/posix/mqueue/full/It_posix_queue_097.cpp
+++ b/testsuites/unittest/posix/mqueue/full/It_posix_queue_097.cpp
@@ -107,9 +107,6 @@ static UINT32 Testcase(VOID)
     ret = pthread_create(&newTh, &attr1, PthreadF01, NULL);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT1);
 
-    LosTaskDelay(1);
-    ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT1);
-
     ret = PosixPthreadInit(&attr1, MQUEUE_PTHREAD_PRIORITY_TEST2);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT2);
 
@@ -119,7 +116,7 @@ static UINT32 Testcase(VOID)
     ret = LosTaskDelay(10); // 10, Set delay time.
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT2);
 
-    ICUNIT_GOTO_EQUAL(g_testCount, 4, g_testCount, EXIT2); // 4, Here, assert the g_testCount.
+    TestAssertWaitDelay(&g_testCount, 4); // 4, Here, assert the g_testCount.
 
     ret = PosixPthreadDestroy(&attr1, newTh2);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT2);
diff --git a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_053.cpp b/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_053.cpp
index 2308073d21af2e5f0b095b9b5780a163d1465ad7..01dd6aa2a73fd33b61420bbf4d8c1ce3cba943af 100644
--- a/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_053.cpp
+++ b/testsuites/unittest/posix/mqueue/smoke/It_posix_queue_053.cpp
@@ -37,10 +37,7 @@ static VOID *PthreadF01(VOID *argument)
 
     g_testCount = 1;
 
-    ret = LosTaskDelay(5); // 5, Set the timeout of task delay;
-    ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT);
-
-    ICUNIT_GOTO_EQUAL(g_testCount, 3, g_testCount, EXIT); // 3, Here, assert the g_testCount.
+    TestAssertWaitDelay(&g_testCount, 3); // 3, Here, assert the g_testCount.
 
     ret = mq_send(g_gqueue, msgptr, strlen(msgptr), 0);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT);
@@ -105,8 +102,7 @@ static UINT32 Testcase(VOID)
     ret = pthread_create(&newTh1, &attr1, PthreadF01, NULL);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT1);
 
-    LosTaskDelay(1);
-    ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT1);
+    TestAssertWaitDelay(&g_testCount, 1);
 
     ret = PosixPthreadInit(&attr1, MQUEUE_PTHREAD_PRIORITY_TEST2);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT2);
@@ -121,7 +117,7 @@ static UINT32 Testcase(VOID)
 #endif
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT2);
 
-    ICUNIT_GOTO_EQUAL(g_testCount, 4, g_testCount, EXIT2); // 4, Here, assert the g_testCount.
+    TestAssertWaitDelay(&g_testCount, 4); // 4, Here, assert the g_testCount.
 
     ret = PosixPthreadDestroy(&attr1, newTh2);
     ICUNIT_GOTO_EQUAL(ret, MQUEUE_NO_ERROR, ret, EXIT2);