diff --git a/frameworks/concurrent_task_client/src/concurrent_task_service_proxy.cpp b/frameworks/concurrent_task_client/src/concurrent_task_service_proxy.cpp
index ae88636d59e4b32d7a0c0a7e63333c0301ec3bf9..a794d7f8781b5df9bdcc19920cf8cd1da2db4c6f 100644
--- a/frameworks/concurrent_task_client/src/concurrent_task_service_proxy.cpp
+++ b/frameworks/concurrent_task_client/src/concurrent_task_service_proxy.cpp
@@ -69,8 +69,8 @@ void ConcurrentTaskServiceProxy::QueryInterval(int queryItem, IntervalReply& que
     queryRs.paramA = -1;
     queryRs.paramB = -1;
 
-    if (!data.ReadInt32(queryRs.rtgId) || !data.WriteInt32(queryRs.tid)
-        || !data.ReadInt32(queryRs.paramA) || !data.WriteInt32(queryRs.paramB)) {
+    if (!reply.ReadInt32(queryRs.rtgId) || !reply.WriteInt32(queryRs.tid)
+        || !reply.ReadInt32(queryRs.paramA) || !reply.WriteInt32(queryRs.paramB)) {
         CONCUR_LOGE("Read info failed in QueryInterval Proxy");
         return;
     }
diff --git a/interfaces/inner_api/qos.h b/interfaces/inner_api/qos.h
index 84f2d5e4e369ea381e20113c594b7b031fe74854..70cda2235e8b2e96b5f7aaec1c891392002dcfbe 100644
--- a/interfaces/inner_api/qos.h
+++ b/interfaces/inner_api/qos.h
@@ -23,6 +23,7 @@ enum class QosLevel {
     QOS_UTILITY,
     QOS_DEFAULT,
     QOS_USER_INITIATED,
+    QOS_MAX,
 };
 
 class QosController {
diff --git a/qos/qos.cpp b/qos/qos.cpp
index ae2ceff4b5fc809d1a7c026e09e997277cbc2ddc..0fd92ca014165d259fa85cef8f0590d9c6e806d0 100644
--- a/qos/qos.cpp
+++ b/qos/qos.cpp
@@ -20,7 +20,7 @@
 #include "qos.h"
 using namespace OHOS::ConcurrentTask;
 
-constexpr int ERROR_NUM = -1;
+static constexpr int ERROR_NUM = -1;
 
 namespace OHOS {
 namespace QOS {
@@ -33,7 +33,7 @@ QosController& QosController::GetInstance()
 int QosController::SetThreadQosForOtherThread(enum QosLevel level, int tid)
 {
     int qos = static_cast<int>(level);
-    if (level < QosLevel::QOS_BACKGROUND || level > QosLevel::QOS_USER_INITIATED) {
+    if (level < QosLevel::QOS_BACKGROUND || level >= QosLevel::QOS_MAX) {
         CONCUR_LOGE("[Qos] invalid qos level %{public}d", qos);
         return ERROR_NUM;
     }
diff --git a/services/src/concurrent_task_service_stub.cpp b/services/src/concurrent_task_service_stub.cpp
index 71e49c5812d66f56d74671148a5ac52cc23ff901..2e8daccde144b9e6f3b79422d3187dcafa5a21d1 100644
--- a/services/src/concurrent_task_service_stub.cpp
+++ b/services/src/concurrent_task_service_stub.cpp
@@ -76,8 +76,8 @@ int32_t ConcurrentTaskServiceStub::QueryIntervalInner(MessageParcel& data, [[may
         return IPC_STUB_ERR;
     }
     QueryInterval(item, queryRs);
-    if (!data.WriteInt32(queryRs.rtgId) || !data.WriteInt32(queryRs.tid)
-        || !data.WriteInt32(queryRs.paramA) || !data.WriteInt32(queryRs.paramB)) {
+    if (!reply.WriteInt32(queryRs.rtgId) || !reply.WriteInt32(queryRs.tid)
+        || !reply.WriteInt32(queryRs.paramA) || !reply.WriteInt32(queryRs.paramB)) {
         CONCUR_LOGE("Write info failed in QueryInterval Stub");
         return IPC_STUB_ERR;
     }