diff --git a/qos_auth/auth_ctl/qos_ctrl.c b/qos_auth/auth_ctl/qos_ctrl.c
index 1367f860efb6abe78886e8c80dfbc8de3d048da0..9f51767957a4711683c205281263daa550099e11 100644
--- a/qos_auth/auth_ctl/qos_ctrl.c
+++ b/qos_auth/auth_ctl/qos_ctrl.c
@@ -479,9 +479,6 @@ static long ctrl_qos_operation(int abi, void __user *uarg)
 		return ret;
 	}
 
-	/* transfer user space qos level to kernel space qos level */
-	qos_data.level -= QOS_LEVEL_INTERVAL;
-
 	return do_qos_manipulate(&qos_data);
 }
 
@@ -541,7 +538,7 @@ static inline bool valid_qos_item(struct qos_policy_datas *datas)
 	}
 
 	/* check user space qos polcicy data, level 0 reserved */
-	for (i = 0; i <= NR_QOS; ++i) {
+	for (i = 0; i < NR_QOS; ++i) {
 		data = &datas->policys[i];
 
 		if (!valid_nice(data->nice)) {
@@ -593,7 +590,7 @@ static long do_qos_policy_change(struct qos_policy_datas *datas)
 		item = &qos_policy_array[type].levels[i];
 
 		/* user space policy params */
-		data = &datas->policys[i + QOS_LEVEL_INTERVAL];
+		data = &datas->policys[i];
 
 		item->nice = data->nice;
 		item->latency_nice = data->latency_nice;
diff --git a/qos_auth/auth_ctl/qos_ctrl.h b/qos_auth/auth_ctl/qos_ctrl.h
index 301f1413d737b209bb1713b55f8f184e08c57044..3ca02053b2f91945363371d617000652e33be319 100644
--- a/qos_auth/auth_ctl/qos_ctrl.h
+++ b/qos_auth/auth_ctl/qos_ctrl.h
@@ -13,11 +13,8 @@
 
 #include <linux/sched/qos_ctrl.h>
 
-/* qos level interval between user space and kernel space */
-#define QOS_LEVEL_INTERVAL 1
-
 /* min qos level used in kernel space, begin index for LOOP */
-#define QOS_POLICY_MIN_LEVEL (NO_QOS + QOS_LEVEL_INTERVAL)
+#define QOS_POLICY_MIN_LEVEL 0
 
 struct qos_policy_item {
 	int nice;
diff --git a/qos_auth/include/qos_ctrl.h b/qos_auth/include/qos_ctrl.h
index 08408215031663828ab1de71540c653ce9f2ee2e..2216b361931602896ad31ca1362e7c9a073a047a 100644
--- a/qos_auth/include/qos_ctrl.h
+++ b/qos_auth/include/qos_ctrl.h
@@ -104,7 +104,7 @@ struct qos_policy_datas {
 	 */
 	int policy_type;
 	unsigned int policy_flag;
-	struct qos_policy_data policys[NR_QOS + 1];
+	struct qos_policy_data policys[NR_QOS];
 };
 
 struct auth_struct;