diff --git a/low_power_player/src/low_power_player_factory.cpp b/low_power_player/src/low_power_player_factory.cpp
index 71c2c71ae7885fe2e9f57e9c9d9b647747d92e33..c351a4cce0d2d8bd04d0688e273c352f72adf6e9 100644
--- a/low_power_player/src/low_power_player_factory.cpp
+++ b/low_power_player/src/low_power_player_factory.cpp
@@ -15,8 +15,8 @@
 
 #include <dlfcn.h>
 #include "lpp_log.h"
-#include "low_power_player_factory.h"
 #include "lpp_sync_manager_adapter.h"
+#include "low_power_player_factory.h"
 namespace OHOS {
 namespace HDI {
 namespace LowPowerPlayer {
@@ -55,12 +55,12 @@ int32_t LowPowerPlayerFactory::GetAVCapability(LppAVCap& avCap)
     std::lock_guard<std::mutex> lock(mutex_);
     if (libHandle_ == nullptr) {
         void *handle = dlopen(LOW_POWER_PLAYER_VDI_LIBRARY, RTLD_LAZY);
-        CHECK_TRUE_RETURN_RET_LOG(handle == NULL, HDF_FAILURE, "dlopen failed, %{public}s", dlerror());
+        CHECK_TRUE_RETURN_RET_LOG(handle == nullptr, HDF_FAILURE, "dlopen failed, %{public}s", dlerror());
         libHandle_ = std::shared_ptr<void>(handle, dlclose); // use smart pointer to manage library handle
     }
     if (capVdi_ == nullptr) {
         capVdi_ = reinterpret_cast<GetAVCapabilityFunc>(dlsym(libHandle_.get(), "GetAVCapabilityVdi"));
-        CHECK_TRUE_RETURN_RET_LOG(capVdi_ == NULL, HDF_FAILURE, "createVdi_ dlsym failed, %{public}s", dlerror());
+        CHECK_TRUE_RETURN_RET_LOG(capVdi_ == nullptr, HDF_FAILURE, "createVdi_ dlsym failed, %{public}s", dlerror());
     }
     int32_t ret = capVdi_(avCap);
     CHECK_TRUE_RETURN_RET_LOG(ret != HDF_SUCCESS, HDF_FAILURE, "GetAVCapability failed, %{public}s", strerror(errno));
diff --git a/low_power_player/src/lpp_sync_manager_adapter.cpp b/low_power_player/src/lpp_sync_manager_adapter.cpp
index cfab0b70ac2fb8784d02700b9be7c6c46cfd5c04..5dda49f47115398b73549c1ac78f6fd36e97ccc7 100644
--- a/low_power_player/src/lpp_sync_manager_adapter.cpp
+++ b/low_power_player/src/lpp_sync_manager_adapter.cpp
@@ -40,19 +40,20 @@ int32_t LppSyncManagerAdapter::LoadVendorLib()
 {
     if (libHandle_ == nullptr) {
         void* handle = dlopen(LOW_POWER_PLAYER_VDI_LIBRARY, RTLD_LAZY);
-        CHECK_TRUE_RETURN_RET_LOG(handle == NULL, HDF_FAILURE, "dlopen failed, %{public}s", dlerror());
+        CHECK_TRUE_RETURN_RET_LOG(handle == nullptr, HDF_FAILURE, "dlopen failed, %{public}s", dlerror());
         libHandle_ = std::shared_ptr<void>(handle, dlclose);
     }
 
     if (createVdi_ == nullptr) {
         createVdi_ = reinterpret_cast<CreateLowPowerPlayerVdiFunc>(dlsym(libHandle_.get(), "CreateLowPowerPlayerVdi"));
-        CHECK_TRUE_RETURN_RET_LOG(createVdi_ == NULL, HDF_FAILURE, "createVdi_ dlsym failed, %{public}s", dlerror());
+        CHECK_TRUE_RETURN_RET_LOG(createVdi_ == nullptr, HDF_FAILURE, "createVdi_ dlsym failed, %{public}s", dlerror());
     }
 
     if (destroyVdi_ == nullptr) {
         destroyVdi_ =
             reinterpret_cast<DestroyLowPowerPlayerVdiFunc>(dlsym(libHandle_.get(), "DestroyLowPowerPlayerVdi"));
-        CHECK_TRUE_RETURN_RET_LOG(destroyVdi_ == NULL, HDF_FAILURE, "destroyVdi_ dlsym failed, %{public}s", dlerror());
+        CHECK_TRUE_RETURN_RET_LOG(
+            destroyVdi_ == nullptr, HDF_FAILURE, "destroyVdi_ dlsym failed, %{public}s", dlerror());
     }
     return HDF_SUCCESS;
 }
@@ -64,7 +65,7 @@ int32_t LppSyncManagerAdapter::Init()
     CHECK_TRUE_RETURN_RET_LOG(ret != HDF_SUCCESS, HDF_FAILURE, "load vdi failed");
 
     vdiImpl_ = createVdi_();
-    CHECK_TRUE_RETURN_RET_LOG(vdiImpl_ == NULL, HDF_FAILURE, "createVdi_ failed");
+    CHECK_TRUE_RETURN_RET_LOG(vdiImpl_ == nullptr, HDF_FAILURE, "createVdi_ failed");
 
     ret = vdiImpl_->Init();
     CHECK_TRUE_RETURN_RET_LOG(ret != HDF_SUCCESS, HDF_FAILURE, "Init failed");