diff --git a/rosen/samples/composer/hello_composer.cpp b/rosen/samples/composer/hello_composer.cpp
index f9661c47b8..1976efbab9 100644
--- a/rosen/samples/composer/hello_composer.cpp
+++ b/rosen/samples/composer/hello_composer.cpp
@@ -37,7 +37,7 @@ namespace {
 sptr<VSyncReceiver> g_receiver = nullptr;
 }
 
-void HelloComposer::Run(std::vector<std::string> &runArgs)
+void HelloComposer::Run(const std::vector<std::string> &runArgs)
 {
     auto generator = CreateVSyncGenerator();
     sptr<VSyncController> vsyncController = new VSyncController(generator, 0);
@@ -82,7 +82,7 @@ void HelloComposer::Run(std::vector<std::string> &runArgs)
 
 void HelloComposer::ParseArgs(const std::vector<std::string> &runArgs)
 {
-    for (std::string &arg : runArgs) {
+    for (const std::string &arg : runArgs) {
         if (arg == "--dump") {
             dump_ = true;
         } else if (arg == "--testClient") {
diff --git a/rosen/samples/hello_native_buffer/hello_native_buffer.cpp b/rosen/samples/hello_native_buffer/hello_native_buffer.cpp
index 1f8f1490d6..64c127a1e1 100644
--- a/rosen/samples/hello_native_buffer/hello_native_buffer.cpp
+++ b/rosen/samples/hello_native_buffer/hello_native_buffer.cpp
@@ -44,7 +44,7 @@ OH_NativeBuffer_Config config {
     .usage = BUFFER_USAGE_CPU_READ | BUFFER_USAGE_CPU_WRITE | BUFFER_USAGE_MEM_DMA
 };
 
-void CompareOH_NativeBufferConfig(OH_NativeBuffer_Config &config, const OH_NativeBuffer_Config &checkConfig)
+void CompareOH_NativeBufferConfig(const OH_NativeBuffer_Config &config, const OH_NativeBuffer_Config &checkConfig)
 {
     if (config.width != checkConfig.width) {
         LOGE("OH_NativeBufferConfig width different");
diff --git a/utils/sync_fence/src/sync_fence.cpp b/utils/sync_fence/src/sync_fence.cpp
index e669a2282a..55b874068d 100644
--- a/utils/sync_fence/src/sync_fence.cpp
+++ b/utils/sync_fence/src/sync_fence.cpp
@@ -186,7 +186,7 @@ ns_sec_t SyncFence::SyncFileReadTimestamp()
         return FENCE_PENDING_TIMESTAMP;
     }
     size_t signalFenceCount = 0;
-    for (auto &info : ptInfos) {
+    for (const auto &info : ptInfos) {
         if (info.status == SIGNALED) {
             signalFenceCount++;
         }
@@ -194,7 +194,7 @@ ns_sec_t SyncFence::SyncFileReadTimestamp()
     if (signalFenceCount == ptInfos.size()) {
         // fence signaled
         uint64_t timestamp = 0;
-        for (auto &ptInfo : ptInfos) {
+        for (const auto &ptInfo : ptInfos) {
             if (ptInfo.timestampNs > timestamp) {
                 timestamp = ptInfo.timestampNs;
             }
@@ -265,7 +265,7 @@ FenceStatus SyncFence::GetStatus()
         return ERROR;
     }
     size_t signalFenceCount = 0;
-    for (auto &info : ptInfos) {
+    for (const auto &info : ptInfos) {
         if (info.status == SIGNALED) {
             signalFenceCount++;
         }