diff --git a/common/src/daudio_util.cpp b/common/src/daudio_util.cpp
index 6811279e5eec247ad31717df3b7a5a1b4fcdd590..169fb685157b194f2fe52d3338fcc968a0a8405f 100644
--- a/common/src/daudio_util.cpp
+++ b/common/src/daudio_util.cpp
@@ -228,9 +228,6 @@ int32_t GetAudioParamStr(const std::string &params, const std::string &key, std:
     }
     size_t splitPosEnd = params.find(';', pos);
     if (splitPosEnd != params.npos) {
-        if (pos + step + 1 > splitPosEnd) {
-            return ERR_DH_AUDIO_FAILED;
-        }
         value = params.substr(pos + step + 1, splitPosEnd - pos - step - 1);
     } else {
         value = params.substr(pos + step + 1);
diff --git a/services/audiomanager/managersink/src/daudio_sink_dev.cpp b/services/audiomanager/managersink/src/daudio_sink_dev.cpp
index 47d0312b7f8dad647272c8c535ccbbd7e1a92763..5e308d3c8fa465ea64ffaba3dd8faf3c2cb30a59 100644
--- a/services/audiomanager/managersink/src/daudio_sink_dev.cpp
+++ b/services/audiomanager/managersink/src/daudio_sink_dev.cpp
@@ -128,12 +128,7 @@ int32_t DAudioSinkDev::TaskOpenDSpeaker(const std::string &args)
         DHLOGE("Not found the keys.");
         return ERR_DH_AUDIO_FAILED;
     }
-    cJSON *temp = cJSON_GetObjectItem(jParam, KEY_DH_ID);
-    if (temp == NULL || !cJSON_IsString(temp)) {
-        cJSON_Delete(jParam);
-        return ERR_DH_AUDIO_FAILED;
-    }
-    int32_t dhId = ConvertString2Int(std::string(temp->valuestring));
+    int32_t dhId = ConvertString2Int(std::string(cJSON_GetObjectItem(jParam, KEY_DH_ID)->valuestring));
     CHECK_AND_FREE_RETURN_RET_LOG(dhId == -1, ERR_DH_AUDIO_NULLPTR, jParam,
         "%{public}s", "Parse dhId error.");
     std::shared_ptr<ISpkClient> speakerClient = nullptr;
@@ -713,13 +708,8 @@ void DAudioSinkDev::SinkEventHandler::NotifyOpenMic(const AppExecFwk::InnerEvent
         return;
     }
     int32_t ret = sinkDevObj->TaskOpenDMic(eventParam);
-    cJSON *temp = cJSON_GetObjectItem(jParam, KEY_DH_ID);
-    if (temp == NULL || !cJSON_IsString(temp)) {
-        cJSON_Delete(jParam);
-        return;
-    }
     sinkDevObj->NotifySourceDev(NOTIFY_OPEN_MIC_RESULT,
-        std::string(temp->valuestring), ret);
+        std::string(cJSON_GetObjectItem(jParam, KEY_DH_ID)->valuestring), ret);
     DHLOGI("Open mic device task end, notify source ret %{public}d.", ret);
     CHECK_AND_FREE_RETURN_LOG(ret != DH_SUCCESS, jParam, "%{public}s", "Open mic failed.");
     cJSON_Delete(jParam);
diff --git a/services/audiomanager/managersink/src/daudio_sink_manager.cpp b/services/audiomanager/managersink/src/daudio_sink_manager.cpp
index d39ea9a3afb1d1e798c853f2a06cc58c9de1107d..375cdffab2e496ad6a8d759a672e52d380ff83cd 100644
--- a/services/audiomanager/managersink/src/daudio_sink_manager.cpp
+++ b/services/audiomanager/managersink/src/daudio_sink_manager.cpp
@@ -142,9 +142,6 @@ int32_t DAudioSinkManager::HandleDAudioNotify(const std::string &devId, const st
 
     // now ctrl channel is also goto here, please sure here not crash.
     cJSON *jParam = cJSON_Parse(eventContent.c_str());
-    if (jParam == nullptr) {
-        return ERR_DH_AUDIO_NULLPTR;
-    }
     if (CJsonParamCheck(jParam, { KEY_RANDOM_TASK_CODE })) {
         DHLOGD("Receive audio notify from source, random task code: %{public}s",
             cJSON_GetObjectItemCaseSensitive(jParam, KEY_RANDOM_TASK_CODE)->valuestring);
diff --git a/services/audiomanager/managersource/src/daudio_source_dev.cpp b/services/audiomanager/managersource/src/daudio_source_dev.cpp
index 422f867d0b61ddbb9c1f570e8b4f8ab9c0b199a4..e6abf306e14526122dab8c44196dceee69acbdd8 100644
--- a/services/audiomanager/managersource/src/daudio_source_dev.cpp
+++ b/services/audiomanager/managersource/src/daudio_source_dev.cpp
@@ -387,12 +387,8 @@ int32_t DAudioSourceDev::HandleNotifyRPC(const AudioEvent &event)
         cJSON_Delete(jParam);
         return ERR_DH_AUDIO_FAILED;
     }
-    cJSON *temp = cJSON_GetObjectItem(jParam, KEY_RESULT);
-    if (temp == NULL || !cJSON_IsString(temp)) {
-        cJSON_Delete(jParam);
-        return ERR_DH_AUDIO_FAILED;
-    }
-    rpcResult_ = temp->valueint;
+    
+    rpcResult_ = cJSON_GetObjectItem(jParam, KEY_RESULT)->valueint;
     DHLOGD("Notify RPC event: %{public}d, result: %{public}d.", event.type, rpcResult_);
     std::map<AudioEventType, uint8_t>::iterator iter = eventNotifyMap_.find(event.type);
     if (iter == eventNotifyMap_.end()) {
@@ -658,18 +654,8 @@ void DAudioSourceDev::OnEnableTaskResult(int32_t resultCode, const std::string &
         cJSON_Delete(jParam);
         return;
     }
-    cJSON *temp = cJSON_GetObjectItem(jParam, KEY_DEV_ID);
-    if (temp == NULL || !cJSON_IsString(temp)) {
-        cJSON_Delete(jParam);
-        return;
-    }
-    cJSON *temporary = cJSON_GetObjectItem(jParam, KEY_DH_ID);
-    if (temporary == NULL || !cJSON_IsString(temporary)) {
-        cJSON_Delete(jParam);
-        return;
-    }
-    mgrCallback_->OnEnableAudioResult(std::string(temp->valuestring),
-        std::string(temporary->valuestring), resultCode);
+    mgrCallback_->OnEnableAudioResult(std::string(cJSON_GetObjectItem(jParam, KEY_DEV_ID)->valuestring),
+        std::string(cJSON_GetObjectItem(jParam, KEY_DH_ID)->valuestring), resultCode);
     cJSON_Delete(jParam);
 }
 
@@ -736,18 +722,8 @@ void DAudioSourceDev::OnDisableTaskResult(int32_t resultCode, const std::string
         cJSON_Delete(jParam);
         return;
     }
-    cJSON *temp = cJSON_GetObjectItem(jParam, KEY_DEV_ID);
-    if (temp == NULL || !cJSON_IsString(temp)) {
-        cJSON_Delete(jParam);
-        return;
-    }
-    cJSON *temporary = cJSON_GetObjectItem(jParam, KEY_DH_ID);
-    if (temporary == NULL || !cJSON_IsString(temporary)) {
-        cJSON_Delete(jParam);
-        return;
-    }
-    mgrCallback_->OnDisableAudioResult(std::string(temp->valuestring),
-        std::string(temporary->valuestring), resultCode);
+    mgrCallback_->OnDisableAudioResult(std::string(cJSON_GetObjectItem(jParam, KEY_DEV_ID)->valuestring),
+        std::string(cJSON_GetObjectItem(jParam, KEY_DH_ID)->valuestring), resultCode);
     cJSON_Delete(jParam);
 }
 
diff --git a/services/audiomanager/managersource/src/daudio_source_manager.cpp b/services/audiomanager/managersource/src/daudio_source_manager.cpp
index 29719cbdbebb0f4a3c097f6ac132127903e60154..e6ca12f3d8075e1d9382b71291508153a2d15fdb 100644
--- a/services/audiomanager/managersource/src/daudio_source_manager.cpp
+++ b/services/audiomanager/managersource/src/daudio_source_manager.cpp
@@ -292,13 +292,8 @@ int32_t DAudioSourceManager::HandleDAudioNotify(const std::string &devId, const
     // now ctrl channel is also goto here, please sure here not crash.
     cJSON *jParam = cJSON_Parse(eventContent.c_str());
     if (CJsonParamCheck(jParam, { KEY_RANDOM_TASK_CODE })) {
-        cJSON *temp = cJSON_GetObjectItem(jParam, KEY_RANDOM_TASK_CODE);
-        if (temp == NULL || !cJSON_IsString(temp)) {
-            cJSON_Delete(jParam);
-            return ERR_DH_AUDIO_FAILED;
-        }
         DHLOGD("Receive audio notify from sink, random task code: %{public}s",
-            temp->valuestring);
+            cJSON_GetObjectItemCaseSensitive(jParam, KEY_RANDOM_TASK_CODE)->valuestring);
     }
 
     std::shared_ptr<DAudioSourceDev> sourceDev = nullptr;