diff --git a/base/test/unittest/common/utils_file_test.cpp b/base/test/unittest/common/utils_file_test.cpp
index b8bd84aaf228ce4efc6640768693d09135e3b7a5..8e92c1673bffb687edf2e0fd9b73830e0539f557 100644
--- a/base/test/unittest/common/utils_file_test.cpp
+++ b/base/test/unittest/common/utils_file_test.cpp
@@ -25,7 +25,7 @@ using namespace testing::ext;
 using namespace std;
 
 namespace OHOS {
-namespace {	
+namespace {
 class UtilsFileTest : public testing::Test {
 public :
     static void SetUpTestCase(void);
diff --git a/base/test/unittest/common/utils_singleton_test.cpp b/base/test/unittest/common/utils_singleton_test.cpp
index 37c28ffa97ba3f4bf8424c6365509b6241e75e93..8461612a958e56d84d57ec48b61d3cf57ecd310e 100644
--- a/base/test/unittest/common/utils_singleton_test.cpp
+++ b/base/test/unittest/common/utils_singleton_test.cpp
@@ -25,7 +25,10 @@ namespace {
 class DelayedSingletonDeclearTest {
     DECLARE_DELAYED_SINGLETON(DelayedSingletonDeclearTest);
 public:
-    void* GetObjAddr() { return static_cast<void*>(this); }
+    void* GetObjAddr()
+    {
+        return static_cast<void*>(this);
+    }
 };
 
 DelayedSingletonDeclearTest::~DelayedSingletonDeclearTest() {};
@@ -34,7 +37,10 @@ DelayedSingletonDeclearTest::DelayedSingletonDeclearTest() {};
 class SingletonDeclearTest {
     DECLARE_SINGLETON(SingletonDeclearTest);
 public:
-    void* GetObjAddr() { return static_cast<void*>(this); }
+    void* GetObjAddr()
+    {
+        return static_cast<void*>(this);
+    }
 };
 
 SingletonDeclearTest::~SingletonDeclearTest() {};
@@ -42,19 +48,28 @@ SingletonDeclearTest::SingletonDeclearTest() {};
 
 class SingletonTest: public Singleton<SingletonTest> {
 public:
-    void* GetObjAddr() { return static_cast<void*>(this); }
+    void* GetObjAddr()
+    {
+        return static_cast<void*>(this);
+    }
 };
 
 class DelayedSingletonTest: public DelayedSingleton<DelayedSingletonTest> {
 public:
-    void* GetObjAddr() { return static_cast<void*>(this); }
+    void* GetObjAddr()
+    {
+        return static_cast<void*>(this);
+    }
 };
 
 
 class DelayedRefSingletonDeclearTest {
     DECLARE_DELAYED_REF_SINGLETON(DelayedRefSingletonDeclearTest);
 public:
-    void* GetObjAddr() { return static_cast<void*>(this); }
+    void* GetObjAddr()
+    {
+        return static_cast<void*>(this);
+    }
 };
 
 DelayedRefSingletonDeclearTest::DelayedRefSingletonDeclearTest() {};
@@ -62,7 +77,10 @@ DelayedRefSingletonDeclearTest::~DelayedRefSingletonDeclearTest() {};
 
 class DelayedRefSingletonTest: public DelayedRefSingleton<DelayedRefSingletonTest> {
 public:
-    void* GetObjAddr() { return static_cast<void*>(this); }
+    void* GetObjAddr()
+    {
+        return static_cast<void*>(this);
+    }
 };
 
 
diff --git a/base/test/unittest/common/utils_thread_pool_test.cpp b/base/test/unittest/common/utils_thread_pool_test.cpp
index 6030b03126fd268b9fab05a59c54b16d24ebab4b..118bb0f6d776e094dfdfc9c13c81bfae0a66af48 100644
--- a/base/test/unittest/common/utils_thread_pool_test.cpp
+++ b/base/test/unittest/common/utils_thread_pool_test.cpp
@@ -20,8 +20,9 @@
 #include "thread_pool.h"
 
 using namespace testing::ext;
-using namespace OHOS;
 
+namespace OHOS {
+namespace {
 class UtilsThreadPoolTest : public testing::Test
 {
 public :
@@ -303,3 +304,5 @@ HWTEST_F(UtilsThreadPoolTest, test_09, TestSize.Level0)
     EXPECT_EQ((int)pool.GetCurTaskNum(), 0);
     pool.Stop();
 }
+}  // namespace
+}  // namespace OHOS