diff --git a/frameworks/core/frame_aware_policy/src/intellisense_server.cpp b/frameworks/core/frame_aware_policy/src/intellisense_server.cpp
index a09805e35ce9331e43491909fa8fcef57362f4f5..a8e348bbb585cfda6e9f949357629e1befa417c1 100644
--- a/frameworks/core/frame_aware_policy/src/intellisense_server.cpp
+++ b/frameworks/core/frame_aware_policy/src/intellisense_server.cpp
@@ -384,9 +384,13 @@ int IntelliSenseServer::CreateNewRtgGrp(int prioType, int rtNum)
     struct rtg_grp_data grp_data;
     int ret;
     char fileName[] = "/proc/self/sched_rtg_ctrl";
-    int fd = open(fileName, O_RDWR);
-    if (fd < 0) {
+    FILE* f = fopen(fileName, "r+");
+    if (f == nullptr) {
         RME_LOGE("Open file /proc/self/sched_rth_ctrl, errno = %{public}d", errno);
+        return -1;
+    }
+    int fd =  fileno(f);
+    if (fd < 0) {
         return fd;
     }
     (void)memset_s(&grp_data, sizeof(struct rtg_grp_data), 0, sizeof(struct rtg_grp_data));
@@ -403,7 +407,10 @@ int IntelliSenseServer::CreateNewRtgGrp(int prioType, int rtNum)
     } else {
         RME_LOGI("create rtg grp success, get rtg id %{public}d.", ret);
     }
-    close(fd);
+    int fc = fclose(f);
+    if (fc != 0) {
+        RME_LOGE("fclose file /proc/self/sched_rth_ctrl, errno = %{public}d (%{public}s)", errno, strerror(errno));
+    }
     return ret;
 }
 } // namespace RME
diff --git a/interfaces/innerkits/frameintf/rtg_interface.cpp b/interfaces/innerkits/frameintf/rtg_interface.cpp
index 3677b6fc0e54e4d73dc91e6bab2ee8d0a8e8fd45..9d07449859c8c8e68b718a9a5104719a8c14c1f6 100644
--- a/interfaces/innerkits/frameintf/rtg_interface.cpp
+++ b/interfaces/innerkits/frameintf/rtg_interface.cpp
@@ -65,11 +65,15 @@ static int g_fd = -1;
 __attribute__((constructor)) void BasicOpenRtgNode()
 {
     char fileName[] = "/proc/self/sched_rtg_ctrl";
-    g_fd = open(fileName, O_RDWR);
-    if (g_fd < 0) {
+    FILE* fd = fopen(fileName, "r+");
+    if (fd == nullptr) {
         RME_LOGI("rtg Open fail, errno = %{public}d(%{public}s), dev = %{public}s", errno, strerror(errno), fileName);
         return;
     }
+    g_fd = fileno(fd);
+    if (g_fd < 0) {
+        return;
+    }
     RME_LOGI("rtg Open success");
     return;
 }
@@ -79,8 +83,11 @@ __attribute__((destructor)) void BasicCloseRtgNode()
     if (g_fd < 0) {
         return;
     }
-    RME_LOGI("rtg Close g_fd ret is %{public}d", g_fd);
-    close(g_fd);
+    FILE* fd = fdopen(g_fd, "r+");
+    if (fd != nullptr) {
+        RME_LOGI("rtg Close g_fd ret is %{public}d", g_fd);
+        fclose(fd);
+    }
     g_fd = -1;
 }
 
diff --git a/qos_manager/src/qos_common.cpp b/qos_manager/src/qos_common.cpp
index 364413dfa5d3b1098ad48d47cd834a47c187bfc3..5efe2419aaa8eb543bd8fc830855d61f4d3c1f92 100644
--- a/qos_manager/src/qos_common.cpp
+++ b/qos_manager/src/qos_common.cpp
@@ -31,7 +31,11 @@ namespace QosCommon {
 static int TrivalOpenAuthCtrlNode(void)
 {
     char fileName[] = "/dev/auth_ctrl";
-    int fd = open(fileName, O_RDWR);
+    FILE* f = fopen(fileName, "r+");
+    if (f == nullptr) {
+        return -1;
+    }
+    int fd = fileno(f);
     return fd;
 }
 
@@ -57,7 +61,10 @@ int AuthEnable(int pid, unsigned int flag, unsigned int status)
     if (ret < 0) {
         RME_LOGE("auth enable failed for pid %{public}d with status %{public}u\n", pid, status);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "r+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
 
@@ -83,7 +90,10 @@ int AuthPause(int pid)
     if (ret < 0) {
         RME_LOGE("auth pause failed for pid %{public}d\n", pid);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "r+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }
 
@@ -106,7 +116,10 @@ int AuthDelete(int pid)
     if (ret < 0) {
         RME_LOGE("auth delete failed for pid %{public}d\n", pid);
     }
-    close(fd);
+    FILE* f = fdopen(fd, "r+");
+    if (f != nullptr) {
+        fclose(f);
+    }
     return ret;
 }