diff --git a/interfaces/inner_kits/native_cpp/audio_source/src/daudio_ipc_callback.cpp b/interfaces/inner_kits/native_cpp/audio_source/src/daudio_ipc_callback.cpp
index ce68d631402b4e2a78bdce0dd0004129535c2444..a147742fdb390d5d4180172f7ec831d38ead88e9 100644
--- a/interfaces/inner_kits/native_cpp/audio_source/src/daudio_ipc_callback.cpp
+++ b/interfaces/inner_kits/native_cpp/audio_source/src/daudio_ipc_callback.cpp
@@ -25,6 +25,10 @@
 
 namespace OHOS {
 namespace DistributedHardware {
+namespace {
+constexpr uint32_t DUAIO_IPC_CALLBACK_MAX_ALLOW_SIZE = 64;
+}
+
 int32_t DAudioIpcCallback::OnNotifyRegResult(const std::string &devId, const std::string &dhId,
     const std::string &reqId, int32_t status, const std::string &resultData)
 {
@@ -113,6 +117,10 @@ void DAudioIpcCallback::PushRegisterCallback(const std::string &reqId,
 {
     DHLOGD("Push register callback, reqId: %{public}s", reqId.c_str());
     std::lock_guard<std::mutex> registerLck(registerMapMtx_);
+    if (registerCallbackMap_.size() >= DUAIO_IPC_CALLBACK_MAX_ALLOW_SIZE) {
+        DHLOGE("Callback map is full, not allow to insert anymore.");
+        return;
+    }
     registerCallbackMap_.emplace(reqId, callback);
 }
 
diff --git a/services/audiomanager/managersink/src/daudio_sink_manager.cpp b/services/audiomanager/managersink/src/daudio_sink_manager.cpp
index 172b9129629350f516d6362e7e29badfe63645fa..449f58610f93a8d63e7349ca5eb5c75ceae60e0d 100644
--- a/services/audiomanager/managersink/src/daudio_sink_manager.cpp
+++ b/services/audiomanager/managersink/src/daudio_sink_manager.cpp
@@ -29,11 +29,15 @@
 
 namespace OHOS {
 namespace DistributedHardware {
-static const std::string PARAM_CLOSE_SPEAKER = "{\"audioParam\":null,\"dhId\":\"" +
+namespace {
+const std::string PARAM_CLOSE_SPEAKER = "{\"audioParam\":null,\"dhId\":\"" +
     std::to_string(PIN_OUT_SPEAKER) + "\",\"eventType\":12}";
-static const std::string PARAM_CLOSE_MIC = "{\"audioParam\":null,\"dhId\":\"" +
+const std::string PARAM_CLOSE_MIC = "{\"audioParam\":null,\"dhId\":\"" +
     std::to_string(PIN_IN_MIC) + "\",\"eventType\":22}";
 const int DEFAULT_DEVICE_SECURITY_LEVEL = -1;
+constexpr uint32_t DAUDIO_SOURCE_SERVICE_MAX_SIZE = 64;
+}
+
 
 IMPLEMENT_SINGLE_INSTANCE(DAudioSinkManager);
 using AVTransProviderClass = IAVEngineProvider *(*)(const std::string &);
@@ -76,7 +80,7 @@ int32_t DAudioSinkManager::Init(const sptr<IDAudioSinkIpcCallback> &sinkCallback
     DHLOGI("Load av receiver engine success.");
 
     if (LoadAVSenderEngineProvider() != DH_SUCCESS) {
-        DHLOGI("Load av sender engine provider failed.");
+        DHLOGE("Load av sender engine provider failed.");
         return ERR_DH_AUDIO_FAILED;
     }
     CHECK_NULL_RETURN(sendProviderPtr_, ERR_DH_AUDIO_FAILED);
@@ -275,6 +279,10 @@ int32_t DAudioSinkManager::DAudioNotify(const std::string &devId, const std::str
     CHECK_NULL_RETURN(remoteSvrProxy, ERR_DH_AUDIO_NULLPTR);
     {
         std::lock_guard<std::mutex> lck(remoteSvrMutex_);
+        if (sourceServiceMap_.size() >= DAUDIO_SOURCE_SERVICE_MAX_SIZE) {
+            DHLOGE("Source service map is full, not allow to insert anymore.");
+            return ERR_DH_AUDIO_FAILED;
+        }
         sourceServiceMap_[devId] = remoteSvrProxy;
         remoteSvrProxy->DAudioNotify(localNetworkId_, dhId, eventType, eventContent);
     }
diff --git a/services/audiomanager/managersource/src/daudio_source_manager.cpp b/services/audiomanager/managersource/src/daudio_source_manager.cpp
index 41a7e146eb26f5107b440f585f178259e15ed698..e7a3a46f8f0e285a35a76f5cfe005414cb235d3e 100644
--- a/services/audiomanager/managersource/src/daudio_source_manager.cpp
+++ b/services/audiomanager/managersource/src/daudio_source_manager.cpp
@@ -35,6 +35,7 @@ constexpr uint32_t MAX_DEVICE_ID_LENGTH = 200;
 constexpr uint32_t MAX_DISTRIBUTED_HARDWARE_ID_LENGTH = 100;
 constexpr uint32_t EVENT_MANAGER_ENABLE_DAUDIO = 11;
 constexpr uint32_t EVENT_MANAGER_DISABLE_DAUDIO = 12;
+constexpr uint32_t DAUDIO_SINK_SERVICE_MAX_SIZE = 64;
 }
 IMPLEMENT_SINGLE_INSTANCE(DAudioSourceManager);
 using AVTransProviderClass = IAVEngineProvider *(*)(const std::string &);
@@ -340,6 +341,10 @@ int32_t DAudioSourceManager::DAudioNotify(const std::string &devId, const std::s
     CHECK_NULL_RETURN(remoteSvrProxy, ERR_DH_AUDIO_NULLPTR);
     {
         std::lock_guard<std::mutex> lck(remoteSvrMutex_);
+        if (sinkServiceMap_.size() >= DAUDIO_SINK_SERVICE_MAX_SIZE) {
+            DHLOGE("Sink service map is full, not allow to insert anymore.");
+            return ERR_DH_AUDIO_FAILED;
+        }
         sinkServiceMap_[devId] = remoteSvrProxy;
         remoteSvrProxy->DAudioNotify(localDevId_, dhId, eventType, eventContent);
     }