diff --git a/testsuites/sample/cmsis/cmsis_func_test.c b/testsuites/sample/cmsis/cmsis_func_test.c
index 56cfb255..4423987c 100644
--- a/testsuites/sample/cmsis/cmsis_func_test.c
+++ b/testsuites/sample/cmsis/cmsis_func_test.c
@@ -91,7 +91,6 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis007, Function | MediumTest | Level1)
 {
     osMessageQueueId_t msgQueueId;
     osMessageQueueAttr_t attr = {0};
-    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     CHAR strbuff[] = "hello world";
     CHAR *name = NULL;
     INT32 ret;
@@ -112,6 +111,7 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis007, Function | MediumTest | Level1)
     ICUNIT_ASSERT_EQUAL(name, NULL, name);
 
 #if (LOSCFG_BASE_IPC_QUEUE_STATIC == 1)
+    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     attr.mq_mem = staticBuff;
     attr.mq_size = STATCI_BUFF_SIZE;
     msgQueueId = osMessageQueueNew(1, STATCI_BUFF_SIZE, &attr);
@@ -239,8 +239,6 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis006, Function | MediumTest | Level1)
 LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis005, Function | MediumTest | Level1)
 {
     osMessageQueueId_t msgQueueId;
-    osMessageQueueAttr_t attr = {0};
-    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     CHAR strbuff[] = "hello world";
     CHAR data[STATCI_BUFF_SIZE] = {0};
     INT32 ret;
@@ -272,6 +270,8 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis005, Function | MediumTest | Level1)
 
 #if (LOSCFG_BASE_IPC_QUEUE_STATIC == 1)
     /* static test */
+    osMessageQueueAttr_t attr = {0};
+    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     attr.mq_mem = staticBuff;
     attr.mq_size = STATCI_BUFF_SIZE;
     msgQueueId = osMessageQueueNew(1, STATCI_BUFF_SIZE, &attr);
@@ -311,8 +311,6 @@ EXIT:
 LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis004, Function | MediumTest | Level1)
 {
     osMessageQueueId_t msgQueueId;
-    osMessageQueueAttr_t attr = {0};
-    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     CHAR strbuff[] = "hello world";
     CHAR data[STATCI_BUFF_SIZE] = {0};
     INT32 ret;
@@ -335,6 +333,8 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis004, Function | MediumTest | Level1)
 
 #if (LOSCFG_BASE_IPC_QUEUE_STATIC == 1)
     /* static test */
+    osMessageQueueAttr_t attr = {0};
+    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     attr.mq_mem = staticBuff;
     attr.mq_size = strlen(strbuff) + 1;
     msgQueueId = osMessageQueueNew(1, strlen(strbuff), &attr);
@@ -373,8 +373,6 @@ EXIT:
 LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis003, Function | MediumTest | Level1)
 {
     osMessageQueueId_t msgQueueId;
-    osMessageQueueAttr_t attr = {0};
-    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     CHAR strbuff[] = "hello world";
 
     /* dynmic test */
@@ -386,6 +384,8 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis003, Function | MediumTest | Level1)
 
 #if (LOSCFG_BASE_IPC_QUEUE_STATIC == 1)
     /* static test */
+    osMessageQueueAttr_t attr = {0};
+    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     attr.mq_mem = staticBuff;
     attr.mq_size = STATCI_BUFF_SIZE;
     msgQueueId = osMessageQueueNew(0, strlen(strbuff), &attr);
@@ -417,8 +417,6 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis003, Function | MediumTest | Level1)
 LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis002, Function | MediumTest | Level1)
 {
     osMessageQueueId_t msgQueueId;
-    osMessageQueueAttr_t attr = {0};
-    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     CHAR strbuff[] = "hello world";
     INT32 ret;
 
@@ -434,6 +432,8 @@ LITE_TEST_CASE(CmsisFuncTestSuite, TestCmsis002, Function | MediumTest | Level1)
 
 #if (LOSCFG_BASE_IPC_QUEUE_STATIC == 1)
     /* static test */
+    osMessageQueueAttr_t attr = {0};
+    CHAR staticBuff[STATCI_BUFF_SIZE] = {0};
     attr.mq_mem = staticBuff;
     attr.mq_size = STATCI_BUFF_SIZE;
     msgQueueId = osMessageQueueNew(1, STATCI_BUFF_SIZE, &attr);
diff --git a/testsuites/sample/kernel/atomic/it_los_atomic_010.c b/testsuites/sample/kernel/atomic/it_los_atomic_010.c
index ea485481..ddcbd06d 100644
--- a/testsuites/sample/kernel/atomic/it_los_atomic_010.c
+++ b/testsuites/sample/kernel/atomic/it_los_atomic_010.c
@@ -62,9 +62,9 @@ static UINT32 TestCase(VOID)
     ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
     LOS_TaskDelay(20); // delay 20 ticks.
 
-    ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT);
-    ICUNIT_GOTO_EQUAL(g_testAtomicID05, TEST_LOOP, g_testAtomicID05, EXIT);
-EXIT:
+    ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount);
+    ICUNIT_ASSERT_EQUAL(g_testAtomicID05, TEST_LOOP, g_testAtomicID05);
+
     return LOS_OK;
 }
 
diff --git a/testsuites/sample/kernel/atomic/it_los_atomic_011.c b/testsuites/sample/kernel/atomic/it_los_atomic_011.c
index 995c15f2..04dfc447 100644
--- a/testsuites/sample/kernel/atomic/it_los_atomic_011.c
+++ b/testsuites/sample/kernel/atomic/it_los_atomic_011.c
@@ -232,8 +232,8 @@ static UINT32 TestCase(VOID)
     ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
     LOS_TaskDelay(20); // delay 20 ticks.
 
-    ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT);
-EXIT:
+    ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount);
+
     return LOS_OK;
 }
 
diff --git a/testsuites/sample/kernel/dynlink/It_los_dynlink_005.c b/testsuites/sample/kernel/dynlink/It_los_dynlink_005.c
index 353d6033..af3314ae 100644
--- a/testsuites/sample/kernel/dynlink/It_los_dynlink_005.c
+++ b/testsuites/sample/kernel/dynlink/It_los_dynlink_005.c
@@ -36,7 +36,6 @@ STATIC UINT32 TestCase(VOID)
     VOID *handle = NULL;
     CHAR *dsoNeedOthers = DSO_FULL_PATH("Align4_dynamic_need_others.so");
     CHAR *dsoWithoutPIC = DSO_FULL_PATH("Align4_dynamic_nopic.so");
-    INT32 ret;
 
     handle = (VOID *)LOS_SoLoad(dsoNeedOthers, NULL);
     ICUNIT_ASSERT_EQUAL(handle, NULL, handle);
diff --git a/testsuites/sample/kernel/dynlink/It_los_dynlink_020.c b/testsuites/sample/kernel/dynlink/It_los_dynlink_020.c
index f281992f..f4c4a788 100644
--- a/testsuites/sample/kernel/dynlink/It_los_dynlink_020.c
+++ b/testsuites/sample/kernel/dynlink/It_los_dynlink_020.c
@@ -36,7 +36,6 @@ STATIC UINT32 TestCase(VOID)
     VOID *handle = NULL;
     VOID (*func)(INT32, INT32) = NULL;
     CHAR *dsoName = DSO_FULL_PATH("Align4_dynamic_stdlib.so");
-    INT32 ret;
 
     handle = (VOID *)LOS_SoLoad(dsoName, NULL);
     ICUNIT_ASSERT_EQUAL(handle, NULL, handle);
diff --git a/testsuites/sample/kernel/event/It_los_event_008.c b/testsuites/sample/kernel/event/It_los_event_008.c
index 4528279b..e9bdb954 100644
--- a/testsuites/sample/kernel/event/It_los_event_008.c
+++ b/testsuites/sample/kernel/event/It_los_event_008.c
@@ -74,7 +74,7 @@ static UINT32 Testcase(VOID)
     LOS_EventInit(&g_pevent);
 
     ret = LOS_TaskCreate(&g_testTaskID01, &task1);
-    ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
+    ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
     ICUNIT_GOTO_EQUAL(g_testCount, 3, g_testCount, EXIT); // 3, Here, assert that g_testCount is equal to 3.
 
     g_testCount++;
@@ -84,7 +84,6 @@ static UINT32 Testcase(VOID)
     ICUNIT_GOTO_EQUAL(g_testCount, 4, g_testCount, EXIT1); // 4, Here, assert that g_testCount is equal to 4.
 
 EXIT1:
-
     ret = LOS_EventClear(&g_pevent, 0);
     ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
diff --git a/testsuites/sample/kernel/event/It_los_event_013.c b/testsuites/sample/kernel/event/It_los_event_013.c
index 0201f498..34301d72 100644
--- a/testsuites/sample/kernel/event/It_los_event_013.c
+++ b/testsuites/sample/kernel/event/It_los_event_013.c
@@ -84,7 +84,7 @@ static UINT32 Testcase(VOID)
     LOS_EventInit(&g_pevent);
 
     ret = LOS_TaskCreate(&g_testTaskID01, &task1);
-    ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
+    ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
     ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT);
 
     g_testCount++;
diff --git a/testsuites/sample/kernel/event/It_los_event_014.c b/testsuites/sample/kernel/event/It_los_event_014.c
index 31b580da..4f242120 100644
--- a/testsuites/sample/kernel/event/It_los_event_014.c
+++ b/testsuites/sample/kernel/event/It_los_event_014.c
@@ -87,7 +87,7 @@ static UINT32 Testcase(VOID)
     ret = LOS_EventWrite(&g_pevent, 0x11);
     ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT1);
 
-    ret = LOS_TaskResume(g_testTaskID01);
+    (VOID)LOS_TaskResume(g_testTaskID01);
     ICUNIT_GOTO_EQUAL(g_testCount, 5, g_testCount, EXIT1); // 5, Here, assert that g_testCount is equal to 5.
 
 EXIT1:
diff --git a/testsuites/sample/kernel/event/It_los_event_019.c b/testsuites/sample/kernel/event/It_los_event_019.c
index 77f3008c..ba9798ff 100644
--- a/testsuites/sample/kernel/event/It_los_event_019.c
+++ b/testsuites/sample/kernel/event/It_los_event_019.c
@@ -90,7 +90,7 @@ static UINT32 Testcase(VOID)
     LOS_EventInit(&g_pevent);
 
     ret = LOS_TaskCreate(&g_testTaskID01, &task1);
-    ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
+    ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
     ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount);
     g_testCount++;
diff --git a/testsuites/sample/kernel/event/It_los_event_020.c b/testsuites/sample/kernel/event/It_los_event_020.c
index d82ace50..2c814c12 100644
--- a/testsuites/sample/kernel/event/It_los_event_020.c
+++ b/testsuites/sample/kernel/event/It_los_event_020.c
@@ -88,7 +88,7 @@ static UINT32 Testcase(VOID)
     LOS_EventInit(&g_pevent);
 
     ret = LOS_TaskCreate(&g_testTaskID01, &task1);
-    ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
+    ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
     ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount);
     g_testCount++;
diff --git a/testsuites/sample/kernel/event/It_los_event_021.c b/testsuites/sample/kernel/event/It_los_event_021.c
index 2f1f4a8e..9b63a74a 100644
--- a/testsuites/sample/kernel/event/It_los_event_021.c
+++ b/testsuites/sample/kernel/event/It_los_event_021.c
@@ -85,13 +85,10 @@ static UINT32 Testcase(VOID)
     LOS_EventInit(&g_pevent);
 
     ret = LOS_TaskCreate(&g_testTaskID01, &task1);
-    ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
+    ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
     ICUNIT_ASSERT_EQUAL(g_testCount, 5, g_testCount); // 5, Here, assert that g_testCount is equal to 5.
 
-    return LOS_OK;
-
-EXIT:
     LOS_TaskDelete(g_testTaskID01);
 
     return LOS_OK;
diff --git a/testsuites/sample/kernel/event/It_los_event_033.c b/testsuites/sample/kernel/event/It_los_event_033.c
index c156779c..7fce10ba 100644
--- a/testsuites/sample/kernel/event/It_los_event_033.c
+++ b/testsuites/sample/kernel/event/It_los_event_033.c
@@ -129,14 +129,13 @@ static UINT32 Testcase(VOID)
 
     ICUNIT_GOTO_EQUAL(g_testCount, 3, g_testCount, EXIT2); // 3, Here, assert that g_testCount is equal to 3.
 
-    ret = LOS_EventWrite(&g_pevent, 0xF);
+    (VOID)LOS_EventWrite(&g_pevent, 0xF);
 
     LOS_TaskDelay(1);
 
-    ICUNIT_GOTO_EQUAL(g_testCount, 6, g_testCount, EXIT3); // 6, Here, assert that g_testCount is equal to 6.
+    ICUNIT_ASSERT_EQUAL(g_testCount, 6, g_testCount); // 6, Here, assert that g_testCount is equal to 6.
 
-EXIT3:
-    ret = LOS_EventClear(&g_pevent, 0);
+    (VOID)LOS_EventClear(&g_pevent, 0);
     ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
     ret = LOS_EventDestroy(&g_pevent);
diff --git a/testsuites/sample/kernel/event/It_los_event_037.c b/testsuites/sample/kernel/event/It_los_event_037.c
index aa8b32df..e0ae6ec0 100644
--- a/testsuites/sample/kernel/event/It_los_event_037.c
+++ b/testsuites/sample/kernel/event/It_los_event_037.c
@@ -77,10 +77,9 @@ static UINT32 Testcase(VOID)
 
     LOS_EventClear(&g_pevent, (~(0x11)));
 
-    ret = LOS_TaskResume(g_testTaskID01);
-    ICUNIT_GOTO_EQUAL(g_testCount, 4, g_testCount, EXIT1); // 4, Here, assert that g_testCount is equal to 4.
+    (VOID)LOS_TaskResume(g_testTaskID01);
+    ICUNIT_ASSERT_EQUAL(g_testCount, 4, g_testCount); // 4, Here, assert that g_testCount is equal to 4.
 
-EXIT1:
     ret = LOS_EventClear(&g_pevent, 0);
     ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
diff --git a/testsuites/sample/kernel/lms/It_los_lms_024.c b/testsuites/sample/kernel/lms/It_los_lms_024.c
index a2279638..9e5f0298 100644
--- a/testsuites/sample/kernel/lms/It_los_lms_024.c
+++ b/testsuites/sample/kernel/lms/It_los_lms_024.c
@@ -52,7 +52,7 @@ static UINT32 TestCase(VOID)
     ICUNIT_ASSERT_NOT_EQUAL(buf, NULL, buf);
     buf[7] = '\0'; /* end index 7 */
     PRINTK("%d\n", __LINE__);
-    ret = strcpy_s(buf, 100, src); /* Check LMS detection information when the strcpy_s dest max set 100 overflows. */
+    (VOID)strcpy_s(buf, 100, src); /* Check LMS detection information when the strcpy_s dest max set 100 overflows. */
     PRINTK("%d\n", __LINE__);
 
     ret = LOS_MemFree(g_testLmsPool, buf);
diff --git a/testsuites/sample/kernel/mux/It_los_mutex_009.c b/testsuites/sample/kernel/mux/It_los_mutex_009.c
index 702c8f14..6737f559 100644
--- a/testsuites/sample/kernel/mux/It_los_mutex_009.c
+++ b/testsuites/sample/kernel/mux/It_los_mutex_009.c
@@ -59,7 +59,7 @@ static UINT32 Testcase(VOID)
     task.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
     task.uwResved = 0;
 
-    ret = LOS_TaskCreate(&g_testTaskID01, &task);
+    (VOID)LOS_TaskCreate(&g_testTaskID01, &task);
     ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount); // 1, Here, assert that g_testCount is equal to 1.
 
     ret = LOS_MuxDelete(g_mutexTest);
diff --git a/testsuites/sample/kernel/mux/It_los_mutex_011.c b/testsuites/sample/kernel/mux/It_los_mutex_011.c
index 0fbde21b..998be8f2 100644
--- a/testsuites/sample/kernel/mux/It_los_mutex_011.c
+++ b/testsuites/sample/kernel/mux/It_los_mutex_011.c
@@ -68,7 +68,7 @@ static UINT32 Testcase(VOID)
     task.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
     task.uwResved = 0;
 
-    ret = LOS_TaskCreate(&g_testTaskID01, &task);
+    (VOID)LOS_TaskCreate(&g_testTaskID01, &task);
 
     ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount); // 1, Here, assert that g_testCount is equal to 1.
 
diff --git a/testsuites/sample/kernel/mux/It_los_mutex_014.c b/testsuites/sample/kernel/mux/It_los_mutex_014.c
index 4d7c0312..cad164e6 100644
--- a/testsuites/sample/kernel/mux/It_los_mutex_014.c
+++ b/testsuites/sample/kernel/mux/It_los_mutex_014.c
@@ -70,7 +70,7 @@ static UINT32 Testcase(VOID)
     task.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
     task.uwResved = 0;
 
-    ret = LOS_TaskCreate(&g_testTaskID01, &task);
+    (VOID)LOS_TaskCreate(&g_testTaskID01, &task);
 
     task2.pfnTaskEntry = (TSK_ENTRY_FUNC)TaskF01;
     task2.usTaskPrio = (TASK_PRIO_TEST - 2); // 2, set new task priority, it is higher than the current task.
diff --git a/testsuites/sample/kernel/sem/It_los_sem_019.c b/testsuites/sample/kernel/sem/It_los_sem_019.c
index bfe14f03..171cdab3 100644
--- a/testsuites/sample/kernel/sem/It_los_sem_019.c
+++ b/testsuites/sample/kernel/sem/It_los_sem_019.c
@@ -68,7 +68,7 @@ static UINT32 Testcase(VOID)
     ICUNIT_GOTO_EQUAL(g_testCount, 2, g_testCount, EXIT); // 2, Here, assert that g_testCount is equal to 2.
 
 EXIT:
-    ret = LOS_TaskDelete(g_testTaskID01);
+    (VOID)LOS_TaskDelete(g_testTaskID01);
 
 EXIT2:
     ret = LOS_SemDelete(g_usSemID);
diff --git a/testsuites/sample/kernel/swtmr/It_los_swtmr_076.c b/testsuites/sample/kernel/swtmr/It_los_swtmr_076.c
index f061c618..ad802dbf 100644
--- a/testsuites/sample/kernel/swtmr/It_los_swtmr_076.c
+++ b/testsuites/sample/kernel/swtmr/It_los_swtmr_076.c
@@ -61,7 +61,7 @@ static UINT32 Testcase(VOID)
     ret = LOS_SwtmrStart(swTmrID);
     ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
 
-    ret = LOS_TaskDelay(10); // 10, set delay time.
+    (VOID)LOS_TaskDelay(10); // 10, set delay time.
 
     ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT);
 
diff --git a/testsuites/sample/kernel/swtmr/It_los_swtmr_079.c b/testsuites/sample/kernel/swtmr/It_los_swtmr_079.c
index 1168aa04..c3e6d225 100644
--- a/testsuites/sample/kernel/swtmr/It_los_swtmr_079.c
+++ b/testsuites/sample/kernel/swtmr/It_los_swtmr_079.c
@@ -88,7 +88,7 @@ static UINT32 Testcase(VOID)
     ret = LOS_SwtmrStart(g_swTmrID2);
     ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
 
-    ret = LOS_TaskDelay(10); // 10, set delay time.
+    (VOID)LOS_TaskDelay(10); // 10, set delay time.
     ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT);
 
     return LOS_OK;
diff --git a/testsuites/sample/kernel/swtmr/It_los_swtmr_081.c b/testsuites/sample/kernel/swtmr/It_los_swtmr_081.c
index 3edb6828..b420b35d 100644
--- a/testsuites/sample/kernel/swtmr/It_los_swtmr_081.c
+++ b/testsuites/sample/kernel/swtmr/It_los_swtmr_081.c
@@ -49,8 +49,6 @@ static UINT32 Testcase(VOID)
 {
     UINT32 ret;
     g_testCount1 = 0;
-    UINT64 tickRecord;
-    UINT64 tickUpdate;
     UINT64 deltaTicks;
 
     // 4, Timeout interval of a periodic software timer.
diff --git a/testsuites/sample/kernel/task/It_los_task_039.c b/testsuites/sample/kernel/task/It_los_task_039.c
index 0395c76b..de1a72e9 100644
--- a/testsuites/sample/kernel/task/It_los_task_039.c
+++ b/testsuites/sample/kernel/task/It_los_task_039.c
@@ -50,7 +50,6 @@ static UINT32 TestCase(VOID)
 
     task1.pfnTaskEntry = (TSK_ENTRY_FUNC)TaskF01;
     task1.uwStackSize = LOSCFG_BASE_CORE_TSK_MIN_STACK_SIZE;
-    task1.usTaskPrio = TASK_PRIO_TEST + 1;
     g_testCount = 0;
 
     LOS_TaskLock();
@@ -64,7 +63,6 @@ static UINT32 TestCase(VOID)
         ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
     }
 
-    task1.usTaskPrio = index % OS_TASK_PRIORITY_LOWEST;
     task1.pcName = "TskA";
     task1.uwResved = LOS_TASK_STATUS_DETACHED;
     ret = LOS_TaskCreate(&testTaskID[index], &task1);
diff --git a/testsuites/sample/kernel/task/It_los_task_126.c b/testsuites/sample/kernel/task/It_los_task_126.c
index 15629214..35599d96 100644
--- a/testsuites/sample/kernel/task/It_los_task_126.c
+++ b/testsuites/sample/kernel/task/It_los_task_126.c
@@ -46,10 +46,8 @@ static VOID TaskF01(UINT32 arg)
 static UINT32 TestCase(VOID)
 {
     UINT32 freeMem;
-    UINT32 freeMem1;
     UINT32 freeMem2;
     UINT32 freeMem3;
-    UINT32 freeMem4;
     UINT32 ret;
 
     TSK_INIT_PARAM_S task1 = { 0 };
@@ -66,7 +64,7 @@ static UINT32 TestCase(VOID)
 
     ICUNIT_ASSERT_EQUAL(g_testCount, 1, g_testCount);
 
-    freeMem1 = GetfreeMemSize(m_aucSysMem0);
+    (VOID)GetfreeMemSize(m_aucSysMem0);
 
     LOS_TaskDelay(10); // 10, task delay times.
 
diff --git a/testsuites/sample/kernel/task/It_los_task_128.c b/testsuites/sample/kernel/task/It_los_task_128.c
index 60396640..4098b969 100644
--- a/testsuites/sample/kernel/task/It_los_task_128.c
+++ b/testsuites/sample/kernel/task/It_los_task_128.c
@@ -55,7 +55,6 @@ static VOID TaskF01(VOID)
 static UINT32 TestCase(VOID)
 {
     UINT32 freeMem;
-    UINT32 freeMem1;
     UINT32 freeMem2;
     UINT32 ret;
     TSK_INIT_PARAM_S task1 = { 0 };
diff --git a/testsuites/sample/posix/pthread/It_posix_pthread_013.c b/testsuites/sample/posix/pthread/It_posix_pthread_013.c
index 4c493c10..1f1637e0 100644
--- a/testsuites/sample/posix/pthread/It_posix_pthread_013.c
+++ b/testsuites/sample/posix/pthread/It_posix_pthread_013.c
@@ -59,7 +59,6 @@ EXIT:
 
 static VOID *PthreadF02(void *t)
 {
-    int i;
     int rc;
 
     ICUNIT_GOTO_EQUAL(g_testCount, 1, g_testCount, EXIT);
diff --git a/testsuites/sample/posix/pthread/It_posix_pthread_014.c b/testsuites/sample/posix/pthread/It_posix_pthread_014.c
index d7a764aa..b86f5fe0 100644
--- a/testsuites/sample/posix/pthread/It_posix_pthread_014.c
+++ b/testsuites/sample/posix/pthread/It_posix_pthread_014.c
@@ -33,8 +33,6 @@
 static UINT32 Testcase(VOID)
 {
     pthread_condattr_t condattr;
-    pthread_cond_t cond1;
-    pthread_cond_t cond2;
     int pshared;
     int rc;
 
diff --git a/testsuites/sample/posix/pthread_func_test.c b/testsuites/sample/posix/pthread_func_test.c
index ba112acb..df0ba169 100644
--- a/testsuites/sample/posix/pthread_func_test.c
+++ b/testsuites/sample/posix/pthread_func_test.c
@@ -743,7 +743,6 @@ LITE_TEST_CASE(PthreadFuncTestSuite, TestPthread011, Function | MediumTest | Lev
     pthread_t thread;
     struct sched_param schedParam = { 0 };
     UINT32 ret;
-    pthread_once_t onceControl = 0;
     g_testCount = 0;
     ret = pthread_attr_init(&attr);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
@@ -804,7 +803,6 @@ LITE_TEST_CASE(PthreadFuncTestSuite, TestPthread012, Function | MediumTest | Lev
     pthread_t thread;
     struct sched_param schedParam = { 0 };
     UINT32 ret;
-    pthread_once_t onceControl = 0;
 
     g_testCount = 0;
     g_pthreadSem = 0;
diff --git a/testsuites/unittest/fuzz/src/regex/it_test_regex_fuzz.c b/testsuites/unittest/fuzz/src/regex/it_test_regex_fuzz.c
index 7c96edb1..0a44382b 100644
--- a/testsuites/unittest/fuzz/src/regex/it_test_regex_fuzz.c
+++ b/testsuites/unittest/fuzz/src/regex/it_test_regex_fuzz.c
@@ -45,7 +45,6 @@ extern int g_iteration;
 
 static uint32_t RegexFuzz(void)
 {
-    int fd;
     int ret;
     regex_t preg;
     regmatch_t pmatch[1];
@@ -56,7 +55,6 @@ static uint32_t RegexFuzz(void)
     const int maxStrLen = 5;
     const int maxNumRange = 6;
     const int maxNum1Range = 3;
-    int spid;
     int num;
     int num1;
     char *string1 = NULL;
diff --git a/testsuites/unittest/fuzz/src/semaphore/sem_timedwait_fuzz.c b/testsuites/unittest/fuzz/src/semaphore/sem_timedwait_fuzz.c
index 9695f989..4b9cba78 100644
--- a/testsuites/unittest/fuzz/src/semaphore/sem_timedwait_fuzz.c
+++ b/testsuites/unittest/fuzz/src/semaphore/sem_timedwait_fuzz.c
@@ -52,7 +52,7 @@ void SemTimedWaitFuzzTest(void)
     const int elemNsecIndex = 5;
     struct timespec absTimeout;
     sem_t sem;
-    int pshared, value, getvalue;
+    int pshared, value;
 
     printf("Fuzz test in line [%d] sem_timedwait start\n", __LINE__);
 
diff --git a/testsuites/unittest/fuzz/src/socket/net_fuzz.c b/testsuites/unittest/fuzz/src/socket/net_fuzz.c
index 76804964..b4d49f7e 100644
--- a/testsuites/unittest/fuzz/src/socket/net_fuzz.c
+++ b/testsuites/unittest/fuzz/src/socket/net_fuzz.c
@@ -71,7 +71,6 @@ static void *SampleUdpServer()
     struct sockaddr_in clnAddr = { 0 };
     socklen_t clnAddrLen = sizeof(clnAddr);
     char buf[BUF_SIZE] = { 0 };
-    int flag;
     struct msghdr msg = { 0 };
     struct iovec iov[2] = { };
 
@@ -134,7 +133,6 @@ static void *SampleUdpClient()
     msg.msg_iov = iov;
     msg.msg_iovlen = 1;
     iov[0].iov_base = buf;
-    iov[0].iov_len = sizeof(buf);
     (void)recvmsg(fd, &msg, 0x40);
     printf("c6\r\n");
 
@@ -150,7 +148,6 @@ static UINT32 UdpFun(VOID)
     UINT8 num2;
     UINT8 num3;
     UINT8 num4;
-    UINT8 num5;
 
     INIT_FuzzEnvironment();
     printf("UDPFun starts\n");
@@ -160,7 +157,6 @@ static UINT32 UdpFun(VOID)
         num2 = *(UINT8 *)DT_SetGetU8(&g_element[NUM_1_INDEX], 1);
         num3 = *(UINT8 *)DT_SetGetU8(&g_element[NUM_2_INDEX], 1);
         num4 = *(UINT8 *)DT_SetGetU8(&g_element[NUM_3_INDEX], 1);
-        num5 = *(UINT8 *)DT_SetGetU8(&g_element[NUM_4_INDEX], 1);
 
         (void)snprintf_s(g_udpIp, sizeof(g_udpIp), sizeof(g_udpIp) - 1, "%d.%d.%d.%d", num1, num2, num3, num4);
         g_udpPort = *(UINT16 *)DT_SetGetU16(&g_element[NUM_5_INDEX], 0);
@@ -244,7 +240,6 @@ static void *SampleTcpClient()
     char buf[BUF_SIZE + 1] = { 0 };
     int sfd = -1;
     struct sockaddr_in srvAddr = { 0 };
-    struct sockaddr_in clnAddr = { 0 };
     int ret;
 
     struct sockaddr addr;
diff --git a/testsuites/unittest/fuzz/src/stdlib/strtoull_fuzz.c b/testsuites/unittest/fuzz/src/stdlib/strtoull_fuzz.c
index 26444de0..0f932ab8 100644
--- a/testsuites/unittest/fuzz/src/stdlib/strtoull_fuzz.c
+++ b/testsuites/unittest/fuzz/src/stdlib/strtoull_fuzz.c
@@ -48,7 +48,7 @@ extern int g_iteration;
 
 void StrtoullFuzzTest(void)
 {
-    int base = DEFAULT_BASE_VALUE;
+    int base;
     char *str = NULL;
     char *endPtr = NULL;
 
diff --git a/testsuites/unittest/posix/src/fs/posix_fs_func_test.c b/testsuites/unittest/posix/src/fs/posix_fs_func_test.c
index 66021747..c3754ab4 100644
--- a/testsuites/unittest/posix/src/fs/posix_fs_func_test.c
+++ b/testsuites/unittest/posix/src/fs/posix_fs_func_test.c
@@ -241,7 +241,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFopenFclose004, Function | MediumTest
  */
 LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFopenFclose005, Function | MediumTest | Level1)
 {
-    int ret = 0;
     FILE *fp = NULL;
     fp = fopen(TEST_FILE_PTAH_RIGHT, "c");
     TEST_ASSERT_NULL(fp);
@@ -350,7 +349,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFopenFclose010, Function | MediumTest
  */
 LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFopenFclose011, Function | MediumTest | Level1)
 {
-    int ret = 0;
     FILE *fp = NULL;
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, NULL);
@@ -660,7 +658,7 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFtellFseek008, Function | MediumTest
  */
 LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFtellFseek009, Function | MediumTest | Level1)
 {
-    int ret = 0;
+    int ret;
     FILE *fp = NULL;
     long off = 0;
 
@@ -884,7 +882,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFputs001, Function | MediumTest | Lev
     int ret = 0;
     FILE *fp = NULL;
     const char chr1[TEST_BUF_SIZE] = "hello";
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "w");
     TEST_ASSERT_NOT_NULL(fp);
@@ -907,7 +904,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFputs002, Function | MediumTest | Lev
     int ret = 0;
     FILE *fp = NULL;
     const char chr1[TEST_BUF_SIZE] = "hello";
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "a");
     TEST_ASSERT_NOT_NULL(fp);
@@ -930,7 +926,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFputs003, Function | MediumTest | Lev
     int ret = 0;
     FILE *fp = NULL;
     const char chr1[TEST_BUF_SIZE] = "hello";
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "w+");
     TEST_ASSERT_NOT_NULL(fp);
@@ -983,7 +978,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFputs005, Function | MediumTest | Lev
     int ret = 0;
     FILE *fp = NULL;
     const char chr1[TEST_BUF_SIZE] = "hello";
-    char str[TEST_BUF_SIZE] = {0};
     int i;
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "w+");
@@ -1011,12 +1005,8 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite001, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
 
     const char chr1[TEST_BUF_SIZE] = "hello";
-    const char chr2[TEST_BUF_SIZE] = "world";
-
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "w");
     TEST_ASSERT_NOT_NULL(fp);
@@ -1038,12 +1028,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite002, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
-
-    const char chr1[TEST_BUF_SIZE] = "hello";
-    const char chr2[TEST_BUF_SIZE] = "world";
-
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "w");
     TEST_ASSERT_NOT_NULL(fp);
@@ -1065,12 +1049,8 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite003, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
 
     const char chr1[TEST_BUF_SIZE] = "hello";
-    const char chr2[TEST_BUF_SIZE] = "world";
-
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "r");
     TEST_ASSERT_NOT_NULL(fp);
@@ -1092,12 +1072,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite004, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
-
-    const char chr1[TEST_BUF_SIZE] = "hello";
-    const char chr2[TEST_BUF_SIZE] = "world";
-
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "r");
     TEST_ASSERT_NOT_NULL(fp);
@@ -1119,12 +1093,8 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite005, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
 
     const char chr1[TEST_BUF_SIZE] = "hello";
-    const char chr2[TEST_BUF_SIZE] = "world";
-
-    char str[TEST_BUF_SIZE] = {0};
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "a");
     TEST_ASSERT_NOT_NULL(fp);
@@ -1146,7 +1116,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite006, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
 
     const char chr1[TEST_BUF_SIZE] = "hello";
     const char chr2[TEST_BUF_SIZE] = "world";
@@ -1189,7 +1158,6 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsFreadFwrite007, Function | MediumTest
 {
     int ret = 0;
     FILE *fp = NULL;
-    long off = 0;
 
     const char chr1[TEST_BUF_SIZE] = "hello";
     const char chr2[TEST_BUF_SIZE] = "world";
@@ -1330,7 +1298,7 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsReaddir002, Function | MediumTest | L
     struct dirent *dResult;
     off_t tellDir0;
     off_t tellDir1;
-    int ret = 0;
+    int ret;
 
     ret = mkdir(DIRA, 0777);
     dirp = opendir((DIRA));
@@ -1359,7 +1327,7 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsReaddir002, Function | MediumTest | L
 LITE_TEST_CASE(PosixFsFuncTestSuite, testFsRemove001, Function | MediumTest | Level1)
 {
     FILE *fp = NULL;
-    int ret = 0;
+    int ret;
 
     fp = fopen(TEST_FILE_PTAH_RIGHT, "w");
     fclose(fp);
@@ -1375,7 +1343,7 @@ LITE_TEST_CASE(PosixFsFuncTestSuite, testFsRemove001, Function | MediumTest | Le
  */
 LITE_TEST_CASE(PosixFsFuncTestSuite, testFsRemove002, Function | MediumTest | Level1)
 {
-    int ret = 0;
+    int ret;
 
     ret = mkdir(DIRA, 0777);
     TEST_ASSERT_EQUAL_INT(ret, 0);
diff --git a/testsuites/unittest/posix/src/pthread/pthread_cond_func_test.c b/testsuites/unittest/posix/src/pthread/pthread_cond_func_test.c
index 4d180ead..27cb8477 100644
--- a/testsuites/unittest/posix/src/pthread/pthread_cond_func_test.c
+++ b/testsuites/unittest/posix/src/pthread/pthread_cond_func_test.c
@@ -765,7 +765,6 @@ LITE_TEST_CASE(PthreadFuncTestSuite, testPthread011, Function | MediumTest | Lev
     pthread_t thread;
     struct sched_param schedParam = { 0 };
     UINT32 ret;
-    pthread_once_t onceControl = 0;
     g_testCount = 0;
     ret = pthread_attr_init(&attr);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
@@ -825,7 +824,6 @@ LITE_TEST_CASE(PthreadFuncTestSuite, testPthread012, Function | MediumTest | Lev
     pthread_t thread;
     struct sched_param schedParam = { 0 };
     UINT32 ret;
-    pthread_once_t onceControl = 0;
 
     g_testCount = 0;
     g_pthreadSem = 0;
diff --git a/testsuites/unittest/posix/src/semaphore/semaphore_func_test.c b/testsuites/unittest/posix/src/semaphore/semaphore_func_test.c
index d34f1f99..6024c792 100644
--- a/testsuites/unittest/posix/src/semaphore/semaphore_func_test.c
+++ b/testsuites/unittest/posix/src/semaphore/semaphore_func_test.c
@@ -105,7 +105,6 @@ LITE_TEST_CASE(PosixSemaphoreFuncTestSuite, testIpcSem_Timedwait001, Function |
     struct timespec ts = { 0 };
     struct timespec tsNow = { 0 };
     sem_t sem;
-    int semValue = 0;
 
     TEST_ASSERT_EQUAL_INT(0, sem_init((sem_t *)&sem, 0, 0));
 
@@ -138,7 +137,6 @@ LITE_TEST_CASE(PosixSemaphoreFuncTestSuite, testIpcSem_Timedwait002, Function |
     struct timespec tsNow = { 0 };
     struct timespec tsBegin = { 0 };
     sem_t sem;
-    int semValue = 0;
 
     TEST_ASSERT_EQUAL_INT(0, sem_init((sem_t *)&sem, 0, 1));