diff --git a/services/src/qos_interface.cpp b/services/src/qos_interface.cpp
index b970b4b144878fe3a0ae8e812e64589e3441bfce..c82b67e228e626d20955dc40725cc7e25afb2da4 100644
--- a/services/src/qos_interface.cpp
+++ b/services/src/qos_interface.cpp
@@ -28,7 +28,8 @@
 static int TrivalOpenRtgNode(void)
 {
     char fileName[] = "/proc/self/sched_rtg_ctrl";
-    int fd = open(fileName, O_RDWR);
+    FILE* f = fopen(fileName, "w+");
+    int fd = fileno(f);
     if (fd < 0) {
         CONCUR_LOGE("[Interface] task %{public}d belong to user %{public}d open rtg node failed, errno = %{public}d",
             getpid(), getuid(), errno);
@@ -50,7 +51,8 @@ static int TrivalOpenAuthCtrlNode(void)
 static int TrivalOpenQosCtrlNode(void)
 {
     char fileName[] = "/proc/thread-self/sched_qos_ctrl";
-    int fd = open(fileName, O_RDWR);
+    FILE* f = fopen(fileName, "w+");
+    int fd = fileno(f);
     if (fd < 0) {
         CONCUR_LOGE("[Interface] task %{public}d belong to user %{public}d open qos node failed, errno = %{public}d",
             getpid(), getuid(), errno);
@@ -77,8 +79,10 @@ int EnableRtg(bool flag)
         printf("set rtg config enable failed.\n");
     }
 
-    close(fd);
-
+    FILE* f = fdopen(fd, "w+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return 0;
 };
 
@@ -258,7 +262,10 @@ int QosApplyForOther(unsigned int level, int tid)
     if (ret < 0) {
         CONCUR_LOGE("[Interface] task %{public}d apply qos failed, errno = %{public}d", tid, errno);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "w+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
 
@@ -280,7 +287,10 @@ int QosLeave(void)
     if (ret < 0) {
         CONCUR_LOGE("[Interface] task %{public}d leave qos failed, errno = %{public}d", gettid(), errno);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "w+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
 
@@ -302,7 +312,10 @@ int QosLeaveForOther(int tid)
     if (ret < 0) {
         CONCUR_LOGE("[Interface] task %{public}d leave qos failed, errno = %{public}d", tid, errno);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "w+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
 
@@ -320,7 +333,10 @@ int QosPolicySet(const struct QosPolicyDatas *policyDatas)
     if (ret < 0) {
         CONCUR_LOGE("[Interface] set qos policy failed, errno = %{public}d", errno);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "w+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
 
@@ -351,6 +367,9 @@ int QosGetForOther(int tid, int &level)
     }
     level = data.qos;
 
-    close(fd);
+    FILE* f = fdopen(fd, "w+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
\ No newline at end of file