diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_001.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_001.cpp
index cd5249d60cb568511b8b6e30a1acdfe78bb8bac7..e0e6ff7bdd902ee5bb8b2eadcd295004c61b4e2d 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_001.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_001.cpp
@@ -64,12 +64,8 @@ EXIT:
 
 static int Testcase(void)
 {
-    struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
-    pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
     int index = 0;
     pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_NORMAL);
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_002.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_002.cpp
index 55dda9662600c30e0dfbb750148e7aea167d438b..14eb961117a063ce28ce25c058cf75d67203b00b 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_002.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_002.cpp
@@ -65,10 +65,8 @@ static int Testcase(void)
 {
     struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
     int index = 0;
     int currThreadPri, currThreadPolicy;
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_003.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_003.cpp
index ff3bca70a6b27242d1d0c03248c8dc007fa48672..092ea25c82ff4fc2d8339c08844bf1125b8ea31a 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_003.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_003.cpp
@@ -74,12 +74,9 @@ static int Testcase(void)
 {
     struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
-    int count = 0;
     int currThreadPri, currThreadPolicy;
 
     g_preTaskPri = 0xffffffff;
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_004.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_004.cpp
index f5affe141d5b42afaf8a1d975396ca776633839f..a22b7020d7b48b288a99ae818f8de9f9ddf45415 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_004.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_004.cpp
@@ -49,8 +49,6 @@ static void *ThreadFuncTest3(void *a)
     int ret;
     int tid = Gettid();
     pthread_t thread = pthread_self();
-    int currThreadPri, currThreadPolicy;
-    struct sched_param param = { 0 };
 
     ret = pthread_detach(thread);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -124,14 +122,10 @@ EXIT:
 
 static int Testcase(void)
 {
-    struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
-    pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
-    int index = 0;
+
     pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_NORMAL);
     pthread_mutex_init(&g_muxLock001, &mutex);
     pthread_mutex_init(&g_muxLock002, &mutex);
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_005.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_005.cpp
index 9d86a82cf717402157db98170b15cbf2aa07fdca..b7f06350694c2cfbb9f033c2969445f76c305adf 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_005.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_005.cpp
@@ -49,8 +49,6 @@ static void *ThreadFuncTest3(void *a)
     int ret;
     int tid;
     pthread_t thread = pthread_self();
-    int currThreadPri, currThreadPolicy;
-    struct sched_param param = { 0 };
 
     ret = pthread_detach(thread);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -126,14 +124,10 @@ EXIT:
 
 static int Testcase(void)
 {
-    struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
-    pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
-    int index = 0;
+
     pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_NORMAL);
     pthread_mutex_init(&g_muxLock001, &mutex);
     pthread_mutex_init(&g_muxLock002, &mutex);
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_006.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_006.cpp
index ee2635996478ce1e52717010db3d3953feb7ef7a..79c47faa50dba06baa3a910187f28b2d5454d5ad 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_006.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_006.cpp
@@ -48,8 +48,6 @@ static void *ThreadFuncTest3(void *a)
 {
     int ret;
     int tid = Gettid();
-    int currThreadPri, currThreadPolicy;
-    struct sched_param param = { 0 };
     pthread_t thread = pthread_self();
 
     ret = pthread_detach(thread);
@@ -118,18 +116,14 @@ static void *ThreadFuncTest1(void *a)
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
 
 EXIT:
-    return nullptr;
+return nullptr;
 }
 
 static int Testcase(void)
 {
-    struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
-    pthread_attr_t a = { 0 };
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
-    int index = 0;
     pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_NORMAL);
     pthread_mutex_init(&g_mutexLock001, &mutex);
     pthread_mutex_init(&g_mutexLock002, &mutex);
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_007.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_007.cpp
index e8bda9c55cebb2877179e6dd031ab9b6a759efbd..b3129b807197ae506c66b6b0dbd17d6d8086809c 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_007.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_007.cpp
@@ -43,7 +43,6 @@ static void *ThreadFuncTest3(void *a)
 {
     int ret;
     pthread_t thread = pthread_self();
-    int currThreadPri, currThreadPolicy;
     struct sched_param param = { 0 };
     struct timespec time;
     struct timeval timeVal = { 0 };
@@ -62,7 +61,7 @@ static void *ThreadFuncTest3(void *a)
     g_testToCount003++;
 
     while (g_testToCount002 == 0) {
-        SLEEP_AND_YIELD(2); // 2, delay enouge time
+        SLEEP_AND_YIELD(2); // 2, delay enough time
     }
 
     ret = pthread_mutex_unlock(&g_muxLock003);
@@ -96,7 +95,7 @@ static void *ThreadFuncTest2(void *a)
     g_testToCount002++;
 
     while (g_testToCount001 == 0) {
-        SLEEP_AND_YIELD(2); // 2, delay enouge time
+        SLEEP_AND_YIELD(2); // 2, delay enough time
     }
 
     ret = pthread_mutex_unlock(&g_muxLock002);
@@ -141,12 +140,8 @@ EXIT:
 
 static int Testcase(void)
 {
-    struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
-    pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex = { 0 };
     int index = TEST_COUNT;
 
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_008.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_008.cpp
index 347b3941839da3986eca996f1127ba6e4c78ea2d..c827e21f731c4f8d3214b35cac413dadcd8f3b07 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_008.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_008.cpp
@@ -41,8 +41,6 @@ static void *ThreadFuncTest3(void *a)
 {
     int ret;
     pthread_t thread = pthread_self();
-    int currThreadPri, currThreadPolicy;
-    struct sched_param param = { 0 };
     struct timespec time;
     struct timeval timeVal = { 0 };
 
@@ -120,12 +118,8 @@ EXIT:
 
 static int Testcase(void)
 {
-    struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
-    pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
-    pthread_t newPthread, newPthread1;
+    pthread_t newPthread;
     pthread_mutexattr_t mutex;
     int index = TEST_COUNT;
 
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_017.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_017.cpp
index 5d7ef7d74f38b0b8493adc717f2d0b4b3e84b5df..def2bfa20f0153e0715574033ef101dedf88020b 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_017.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_017.cpp
@@ -38,7 +38,6 @@ static int g_testBackCount = 0;
 static void *ThreadFuncTest3(void *a)
 {
     int ret;
-    int tid = Gettid();
     pthread_t thread = pthread_self();
 
     ret = pthread_detach(thread);
@@ -59,8 +58,6 @@ EXIT:
 static void *ThreadFuncTest2(void *a)
 {
     int ret;
-    int tid = Gettid();
-    pthread_t thread = pthread_self();
 
     g_testBackCount++;
     ret = pthread_mutex_lock(&g_mutexLock);
@@ -78,10 +75,8 @@ static int TestCase(void)
 {
     struct sched_param param = { 0 };
     int ret;
-    void *res = nullptr;
     int currThreadPri, currThreadPolicy;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
     pthread_t newPthread;
     pthread_mutexattr_t mutex;
     pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_NORMAL);
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_019.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_019.cpp
index a82af29a46763cfbf59360f499a842e2f76d21af..05fdb6fa4f3fd2f34d5eb375ae38f89e14506019 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_019.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_019.cpp
@@ -45,8 +45,6 @@ static void *ThreadFuncTest2(void *a)
 {
     int ret;
     pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_detach(thread);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -69,7 +67,6 @@ EXIT:
 static void *ThreadFuncTest1(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
     struct timespec time;
     struct timeval timeVal = { 0 };
 
@@ -106,9 +103,7 @@ static int Testcase(void)
     struct sched_param param = { 0 };
     int ret;
     int threadCount;
-    void *res = nullptr;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
     pthread_t newPthread[10], newPthread1;
     pthread_mutexattr_t mutex;
     int index = TEST_COUNT;
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_020.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_020.cpp
index 34d7fa91cd611751f67ae535ef4d0b623b1dfd36..0c1f334ecf40d8a9fbf3393e9365d7ec5fa320c6 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_020.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_020.cpp
@@ -45,8 +45,6 @@ static void *ThreadFuncTest2(void *a)
 {
     int ret;
     pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_detach(thread);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -69,9 +67,6 @@ EXIT:
 static void *ThreadFuncTest1(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_mutex_lock(&g_muxLock001);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -96,7 +91,6 @@ EXIT:
 static void *ThreadFuncTest0(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
     struct timespec time;
     struct timeval timeVal = { 0 };
 
@@ -136,9 +130,7 @@ static int Testcase(void)
     struct sched_param param = { 0 };
     int ret;
     int threadCount;
-    void *res = nullptr;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
     pthread_t newPthread[10], newPthread1;
     pthread_mutexattr_t mutex;
     int index = TEST_COUNT;
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_021.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_021.cpp
index 11b4110383f435a3fa208e76a8f7676ab434cb15..4a5158613744f3f17a624859ab30a738d5ce1841 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_021.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_021.cpp
@@ -45,8 +45,6 @@ static void *ThreadFuncTest2(void *a)
 {
     int ret;
     pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_detach(thread);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -69,9 +67,6 @@ EXIT:
 static void *ThreadFuncTest1(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_mutex_lock(&g_muxLock001);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -96,7 +91,6 @@ EXIT:
 static void *ThreadFuncTest0(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
     struct timespec time;
     struct timeval timeVal = { 0 };
 
@@ -136,9 +130,7 @@ static int Testcase(void)
     struct sched_param param = { 0 };
     int ret;
     int threadCount;
-    void *res = nullptr;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
     pthread_t newPthread[10], newPthread1;
     pthread_mutexattr_t mutex;
     int index = TEST_COUNT;
diff --git a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_022.cpp b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_022.cpp
index 5ff82980fc69da30ef85b9fc7e54ec313013377e..0ed49774be15b1abbac67900f93f7ab8356645d3 100644
--- a/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_022.cpp
+++ b/testsuites/unittest/process/lock/mutex/smoke/pthread_mutex_test_022.cpp
@@ -45,8 +45,6 @@ static void *ThreadFuncTest2(void *a)
 {
     int ret;
     pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_detach(thread);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -69,9 +67,6 @@ EXIT:
 static void *ThreadFuncTest1(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
-    struct timespec time;
-    struct timeval timeVal = { 0 };
 
     ret = pthread_mutex_lock(&g_muxLock001);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
@@ -96,7 +91,6 @@ EXIT:
 static void *ThreadFuncTest0(void *a)
 {
     int ret;
-    pthread_t thread = pthread_self();
     struct timespec time;
     struct timeval timeVal = { 0 };
 
@@ -136,9 +130,7 @@ static int Testcase(void)
     struct sched_param param = { 0 };
     int ret;
     int threadCount;
-    void *res = nullptr;
     pthread_attr_t a = { 0 };
-    pthread_t thread = pthread_self();
     pthread_t newPthread[10], newPthread1;
     pthread_mutexattr_t mutex;
     int index = TEST_COUNT;