diff --git a/testsuites/unittest/basic/mem/shm/full/shm_test_004.cpp b/testsuites/unittest/basic/mem/shm/full/shm_test_004.cpp
index 3348ea39229bba2caf92d5c7e7a40f78b5152f61..4a2d914c0608fd5cd6d0a23290fac2a0caf43dcb 100644
--- a/testsuites/unittest/basic/mem/shm/full/shm_test_004.cpp
+++ b/testsuites/unittest/basic/mem/shm/full/shm_test_004.cpp
@@ -55,7 +55,6 @@ static int Testcase(VOID)
     ICUNIT_GOTO_EQUAL(ds.shm_perm.uid, getuid(), ds.shm_perm.uid, ERROR_OUT);
 
     ret = shmctl(shmid, SHM_STAT, &ds);
-    // ICUNIT_GOTO_EQUAL(ret, 0x10000, ret, ERROR_OUT);
     ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, ERROR_OUT);
     ICUNIT_GOTO_NOT_EQUAL(ret, 0, ret, ERROR_OUT);
 
@@ -70,7 +69,7 @@ static int Testcase(VOID)
     ICUNIT_GOTO_EQUAL(info.shmmax, 0x1000000, info.shmmax, ERROR_OUT);
     ICUNIT_GOTO_EQUAL(info.shmmin, 1, info.shmmin, ERROR_OUT);
     ICUNIT_GOTO_EQUAL(info.shmmni, 192, info.shmmni, ERROR_OUT);
-    ICUNIT_GOTO_EQUAL(info.shmseg, 128, info.shmseg, ERROR_OUT);
+    ICUNIT_GOTO_EQUAL(info.shmseg, 128, info.shmseg, ERROR_OUT); // 128: expected value of shmseg
     ICUNIT_GOTO_EQUAL(info.shmall, 0x1000, info.shmall, ERROR_OUT);
 
     ret = shmdt(shm);
diff --git a/testsuites/unittest/extended/liteipc/smoke/liteipc_test_001.cpp b/testsuites/unittest/extended/liteipc/smoke/liteipc_test_001.cpp
index 7355dc695bae24c58e3c9977e9ee7a239d1452ca..62cb49a0899bc068c7968ffd6a60c84ba0531e7c 100644
--- a/testsuites/unittest/extended/liteipc/smoke/liteipc_test_001.cpp
+++ b/testsuites/unittest/extended/liteipc/smoke/liteipc_test_001.cpp
@@ -63,13 +63,11 @@ static int LiteIpcTest(void)
     /* testing mmap liteipc mem pool with different size and flag */
     retptr = mmap(nullptr, 1024 * 4096, PROT_READ, MAP_PRIVATE, fd, 0);
     ICUNIT_ASSERT_EQUAL(static_cast<int>(static_cast<intptr_t>(retptr)), -1, retptr);
-    //retptr = mmap(nullptr, 0, PROT_READ, MAP_PRIVATE, fd, 0);
-    //ICUNIT_ASSERT_EQUAL((int)(intptr_t)retptr, -1, retptr);
     retptr = mmap(nullptr, -1, PROT_READ, MAP_PRIVATE, fd, 0);
     ICUNIT_ASSERT_EQUAL(static_cast<int>(static_cast<intptr_t>(retptr)), -1, retptr);
     retptr = mmap(nullptr, 4096, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
     ICUNIT_ASSERT_EQUAL(static_cast<int>(static_cast<intptr_t>(retptr)), -1, retptr);
-    retptr = mmap(nullptr, 4096, PROT_READ, MAP_SHARED, fd, 0);
+    retptr = mmap(nullptr, 4096, PROT_READ, MAP_SHARED, fd, 0); // 4096: length of mapped memory
     ICUNIT_ASSERT_EQUAL(static_cast<int>(static_cast<intptr_t>(retptr)), -1, retptr);
 
     retptr = mmap(nullptr, 1, PROT_READ, MAP_PRIVATE, fd, 0);
@@ -81,7 +79,7 @@ static int LiteIpcTest(void)
     char buf[10] = {0};
     ret = read(fd, buf, 10);
     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
-    ret = write(fd, buf, 10);
+    ret = write(fd, buf, 10); // 10: size of buf
     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
 
     /* before set cms, testing ioctl cmd */
@@ -96,7 +94,7 @@ static int LiteIpcTest(void)
 
     sleep(2);
     /* after set cms, testing set cms cmd */
-    ret = ioctl(fd, IPC_SET_CMS, 200);
+    ret = ioctl(fd, IPC_SET_CMS, 200); // 200: use 200 for set cms cmd testing
     ICUNIT_ASSERT_NOT_EQUAL(ret, 0, ret);
 
     exit(0);
diff --git a/testsuites/unittest/extended/signal/smoke/signal_test_036.cpp b/testsuites/unittest/extended/signal/smoke/signal_test_036.cpp
index 8cb97a67713a7229f7d5264db3f847ec543db4f0..35aaed0b3c6dbcb98facd291d9768ef10f7c71a3 100644
--- a/testsuites/unittest/extended/signal/smoke/signal_test_036.cpp
+++ b/testsuites/unittest/extended/signal/smoke/signal_test_036.cpp
@@ -60,17 +60,6 @@ static int TestCase()
         exit(0);
     }
 
-    /*    sig = SIGTERM;
-    ret = sigaction(sig, (struct sigaction *)1, &oldAct);
-    printf("ret == %d\n", ret);
-    ICUNIT_ASSERT_EQUAL(ret, -1, ret);
-    ICUNIT_ASSERT_EQUAL(errno, EFAULT, errno);
-
-    ret = sigaction(sig, &sigAct, (struct sigaction *)1);
-    printf("ret === %d\n", ret);
-    ICUNIT_ASSERT_EQUAL(ret, -1, ret);
-    ICUNIT_ASSERT_EQUAL(errno, EFAULT, errno); */
-
     ret = waitpid(fpid, &status, 0);
     ICUNIT_ASSERT_EQUAL(ret, fpid, ret);
     ICUNIT_ASSERT_EQUAL(WEXITSTATUS(status), 0, WEXITSTATUS(status));
diff --git a/testsuites/unittest/libc/io/full/IO_test_locale_002.cpp b/testsuites/unittest/libc/io/full/IO_test_locale_002.cpp
index 6e22bc86dae559600dce2ff3c9971d000f31b9ba..daaca4c740f780e4c4ea011d288e1152f6625368 100644
--- a/testsuites/unittest/libc/io/full/IO_test_locale_002.cpp
+++ b/testsuites/unittest/libc/io/full/IO_test_locale_002.cpp
@@ -37,7 +37,6 @@ static UINT32 testcase(VOID)
     time_t currtime;
     struct tm *timer = {nullptr};
     char buffer[80];
-    //locale_t loc = malloc(sizeof(locale_t);
 
     time(&currtime);
     timer = localtime(&currtime);
@@ -46,17 +45,17 @@ static UINT32 testcase(VOID)
     printf("getenv MUSL_LOCPATH=%s\n", getenv("MUSL_LOCPATH"));
 
     printf("Locale is: %s\n", setlocale(LC_TIME, "en_US.UTF-8"));
-    strftime(buffer, 80, "%c", timer);
+    (void)strftime(buffer, sizeof(buffer), "%c", timer);
     printf("Date is: %s\n", buffer);
     ICUNIT_ASSERT_NOT_EQUAL_NULL(buffer, NULL, -1);
 
     printf("Locale is: %s\n", setlocale(LC_TIME, "zh_CN.UTF-8"));
-    strftime(buffer, 80, "%c", timer);
+    (void)strftime(buffer, sizeof(buffer), "%c", timer);
     printf("Date is: %s\n", buffer);
     ICUNIT_ASSERT_NOT_EQUAL_NULL(buffer, NULL, -1);
 
     printf("Locale is: %s\n", setlocale(LC_TIME, ""));
-    strftime(buffer, 80, "%c", timer);
+    (void)strftime(buffer, sizeof(buffer), "%c", timer);
     printf("Date is: %s\n", buffer);
     ICUNIT_ASSERT_NOT_EQUAL_NULL(buffer, NULL, -1);
     setlocale(LC_ALL, "C");
diff --git a/testsuites/unittest/libc/misc/misc_test.cpp b/testsuites/unittest/libc/misc/misc_test.cpp
index 319e5658566ac824f63b00b3d6f79723792809ca..0f34b621a1aed71305ef9eba774d760943d3c263 100644
--- a/testsuites/unittest/libc/misc/misc_test.cpp
+++ b/testsuites/unittest/libc/misc/misc_test.cpp
@@ -145,26 +145,6 @@ HWTEST_F(MiscTest, ItTestMisc009, TestSize.Level0)
     ItTestMisc009();
 }
 
-/* *
- * @tc.name: IT_TEST_MISC_010
- * @tc.desc: function for MiscTest
- * @tc.type: FUNC
- */
-/*HWTEST_F(MiscTest, ItTestMisc010, TestSize.Level0)
-{
-    ItTestMisc010();
-}*/
-
-/* *
- * @tc.name: IT_TEST_MISC_011
- * @tc.desc: function for MiscTest
- * @tc.type: FUNC
- */
-/*HWTEST_F(MiscTest, ItTestMisc011, TestSize.Level0)
-{
-    ItTestMisc011();
-}*/
-
 /* *
  * @tc.name: IT_TEST_MISC_012
  * @tc.desc: function for MiscTest
@@ -174,16 +154,6 @@ HWTEST_F(MiscTest, ItTestMisc012, TestSize.Level0)
 {
     ItTestMisc012();
 }
-
-/* *
- * @tc.name: IT_TEST_MISC_013
- * @tc.desc: function for MiscTest
- * @tc.type: FUNC
- */
-/*HWTEST_F(MiscTest, ItTestMisc013, TestSize.Level0)
-{
-    ItTestMisc013();
-}*/
 #endif
 
 } // namespace OHOS
diff --git a/testsuites/unittest/libc/posix/pthread/full/It_posix_pthread_072.cpp b/testsuites/unittest/libc/posix/pthread/full/It_posix_pthread_072.cpp
index b6e5efd86185eecf658eb67bdbb171a4303fedad..9d8141bef27b138dec07f3cd228d3a4c559ecdcd 100644
--- a/testsuites/unittest/libc/posix/pthread/full/It_posix_pthread_072.cpp
+++ b/testsuites/unittest/libc/posix/pthread/full/It_posix_pthread_072.cpp
@@ -34,7 +34,6 @@ static void *pthread_f01(void *tmp)
 {
     int rc = 0;
     g_testCount++;
-    // printf("www\n");
 
     /* acquire the mutex */
     rc = pthread_mutex_lock(&g_pthreadMutexTest1);
@@ -69,7 +68,7 @@ static UINT32 Testcase(VOID)
 
     /* Let the other thread run */
     LosTaskDelay(2);
-    ICUNIT_ASSERT_EQUAL(g_testCount, 2, g_testCount);
+    ICUNIT_ASSERT_EQUAL(g_testCount, 2, g_testCount); // 2: expected value of g_testCount
 
     /* Try to destroy the cond var. This should return an error */
     rc = pthread_cond_destroy(&g_pthreadCondTest1);
@@ -79,7 +78,7 @@ static UINT32 Testcase(VOID)
     ICUNIT_ASSERT_EQUAL(rc, 0, rc);
 
     LosTaskDelay(2);
-    ICUNIT_ASSERT_EQUAL(g_testCount, 4, g_testCount);
+    ICUNIT_ASSERT_EQUAL(g_testCount, 4, g_testCount); // 4: expected value of g_testCount
 
     rc = pthread_cond_destroy(&g_pthreadCondTest1);
     ICUNIT_ASSERT_EQUAL(rc, 0, rc);
diff --git a/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_003.cpp b/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_003.cpp
index 001d1c6b68b77d8137b87328d4284154f7c9055c..9cd44b50000493f52750b2bfea3e5ac5214a506a 100644
--- a/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_003.cpp
+++ b/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_003.cpp
@@ -51,10 +51,6 @@ static UINT32 Testcase(VOID)
 
     tmp = pthread_equal(a, b);
 
-    // pthread_join(a, NULL);
-
-    // pthread_detach(a);
-
     pthread_attr_init(&aa);
 
     pthread_attr_getdetachstate(&aa, &detachstate);
@@ -63,19 +59,6 @@ static UINT32 Testcase(VOID)
 
     pthread_attr_destroy(&aa);
 
-    // pthread_mutex_init(&c, NULL);
-
-    // pthread_mutex_destroy(&c);
-
-    // pthread_mutex_lock(&c);
-
-    // pthread_mutex_trylock(&c);
-
-    // pthread_mutex_unlock(&c);
-
-    // pthread_mutexattr_init(&c);
-
-    // pthread_mutexattr_destroy(&c);
     ret = pthread_join(aThread, NULL);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
 
diff --git a/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_005.cpp b/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_005.cpp
index 9ccb21ec416433d85f3e4fec425f66cc0d556d38..5beb285ca94f6bb03d5f31d7f96a4d3037dce23f 100644
--- a/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_005.cpp
+++ b/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_005.cpp
@@ -36,8 +36,6 @@ static void *ThreadF01(void *arg)
 
     /* Shouldn't reach here.  If we do, then the pthread_cancel()
      * function did not succeed. */
-    // uart_printf_func("Could not send cancel request correctly\n");
-    // ICUNIT_TRACK_EQUAL(1, 0, errno);
     pthread_exit(nullptr);
     return NULL;
 }
@@ -62,7 +60,6 @@ static UINT32 Testcase(VOID)
 
     ret = pthread_join(newTh, (void **)&temp);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
-    // ICUNIT_ASSERT_EQUAL(temp, (UINTPTR)PTHREAD_CANCELED, temp);
     return PTHREAD_NO_ERROR;
 }
 
diff --git a/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_006.cpp b/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_006.cpp
index 0389711ccaf3163ca0ff2e652139eb139f4fdb4c..80d397a314f2fad5e054b115d665fddad5db3039 100644
--- a/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_006.cpp
+++ b/testsuites/unittest/libc/posix/pthread/smoke/It_posix_pthread_006.cpp
@@ -34,7 +34,6 @@ static void *ThreadF01(void *arg)
 {
     pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
 
-    // while (1)
     sleep(1);
 
     pthread_exit(nullptr);
@@ -48,7 +47,6 @@ static UINT32 Testcase(VOID)
     pthread_t a;
 
     /* SIGALRM will be sent in 5 seconds. */
-    // alarm(5);//alarm NOT SUPPORT
 
     /* Create a new thread. */
     if (pthread_create(&a, NULL, ThreadF01, NULL) != 0) {
@@ -61,7 +59,6 @@ static UINT32 Testcase(VOID)
     /* If 'main' has reached here, then the test passed because it means
      * that the thread is truly asynchronise, and main isn't waiting for
      * it to return in order to move on. */
-    // printf("Test PASSED\n");
 
     ret = pthread_join(a, &temp);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
diff --git a/testsuites/unittest/net/socket/net_socket_test.cpp b/testsuites/unittest/net/socket/net_socket_test.cpp
index 01fff55c581b30405869552a6f7d5c90d1036b08..bf71bf330d97c19cb65cc967fb699c3fa55dfcd3 100644
--- a/testsuites/unittest/net/socket/net_socket_test.cpp
+++ b/testsuites/unittest/net/socket/net_socket_test.cpp
@@ -176,16 +176,5 @@ HWTEST_F(NetSocketTest, NetSocketTest012, TestSize.Level0)
     NetSocketTest012();
 }
 
-/* *
- * @tc.name: NetSocketTest013
- * @tc.desc: function for NetSocketTest
- * @tc.type: FUNC
- */
-/*
-HWTEST_F(NetSocketTest, NetSocketTest013, TestSize.Level0)
-{
-    //NetSocketTest013(); // broadcast to self to be supported.
-}
-*/
 #endif
 }
diff --git a/tools/scripts/parse_exc/parse_excinfo.py b/tools/scripts/parse_exc/parse_excinfo.py
index 7f580d8a52c93d83a6825d59df3db2e55663e356..a1ba92d44205de8789ea09eb2c190b6f1a1a1058 100644
--- a/tools/scripts/parse_exc/parse_excinfo.py
+++ b/tools/scripts/parse_exc/parse_excinfo.py
@@ -131,7 +131,6 @@ def parse_user_pc_ulr(excinfo_file, rootfs_dir, string, addr2line_cmd, objdump_c
                 ret = commands.getoutput(cmd)
                 print(ret)
                 cmd = "%s%s%s %s" % (addr2line_cmd, rootfs_dir, strlist[4], strlist[6])
-                #print(cmd)
                 ret = commands.getoutput(cmd)
                 ret = ret.split('\n')
                 print("<%s>%s<%s><%s>\n" % (string, ret[0], strlist[6], strlist[4]))