diff --git a/frameworks/core/frame_aware_policy/src/intellisense_server.cpp b/frameworks/core/frame_aware_policy/src/intellisense_server.cpp
index a8e348bbb585cfda6e9f949357629e1befa417c1..2df393da028b1ee64daeeacb309d481a05e89903 100644
--- a/frameworks/core/frame_aware_policy/src/intellisense_server.cpp
+++ b/frameworks/core/frame_aware_policy/src/intellisense_server.cpp
@@ -389,7 +389,7 @@ int IntelliSenseServer::CreateNewRtgGrp(int prioType, int rtNum)
         RME_LOGE("Open file /proc/self/sched_rth_ctrl, errno = %{public}d", errno);
         return -1;
     }
-    int fd =  fileno(f);
+    int fd = fileno(f);
     if (fd < 0) {
         return fd;
     }
diff --git a/interfaces/innerkits/frameintf/rtg_interface.cpp b/interfaces/innerkits/frameintf/rtg_interface.cpp
index 9d07449859c8c8e68b718a9a5104719a8c14c1f6..9b7b6029ac66ecefd40110a215d830aff780cf0a 100644
--- a/interfaces/innerkits/frameintf/rtg_interface.cpp
+++ b/interfaces/innerkits/frameintf/rtg_interface.cpp
@@ -36,6 +36,7 @@ constexpr size_t MAX_LENGTH = 100;
 
 const char RTG_SCHED_IPC_MAGIC = 0xAB;
 static int g_fd = -1;
+static FILE* g_f = nullptr;
 
 #define CMD_ID_SET_ENABLE \
     _IOWR(RTG_SCHED_IPC_MAGIC, SET_ENABLE, struct rtg_enable_data)
@@ -65,12 +66,12 @@ static int g_fd = -1;
 __attribute__((constructor)) void BasicOpenRtgNode()
 {
     char fileName[] = "/proc/self/sched_rtg_ctrl";
-    FILE* fd = fopen(fileName, "r+");
-    if (fd == nullptr) {
+    g_f = fopen(fileName, "r+");
+    if (g_f == nullptr) {
         RME_LOGI("rtg Open fail, errno = %{public}d(%{public}s), dev = %{public}s", errno, strerror(errno), fileName);
         return;
     }
-    g_fd = fileno(fd);
+    g_fd = fileno(g_f);
     if (g_fd < 0) {
         return;
     }
@@ -83,12 +84,13 @@ __attribute__((destructor)) void BasicCloseRtgNode()
     if (g_fd < 0) {
         return;
     }
-    FILE* fd = fdopen(g_fd, "r+");
-    if (fd != nullptr) {
-        RME_LOGI("rtg Close g_fd ret is %{public}d", g_fd);
-        fclose(fd);
+    RME_LOGI("rtg Close g_fd ret is %{public}d", g_fd);
+    int fc = fclose(g_f);
+    if (fc != 0) {
+        RME_LOGE("rtg fclose file /proc/self/sched_rtg_ctrl, errno = %{public}d (%{public}s)", errno, strerror(errno));
     }
     g_fd = -1;
+    g_f = nullptr;
 }
 
 int EnableRtg(bool flag)
diff --git a/qos_manager/src/qos_common.cpp b/qos_manager/src/qos_common.cpp
index 5efe2419aaa8eb543bd8fc830855d61f4d3c1f92..364413dfa5d3b1098ad48d47cd834a47c187bfc3 100644
--- a/qos_manager/src/qos_common.cpp
+++ b/qos_manager/src/qos_common.cpp
@@ -31,11 +31,7 @@ namespace QosCommon {
 static int TrivalOpenAuthCtrlNode(void)
 {
     char fileName[] = "/dev/auth_ctrl";
-    FILE* f = fopen(fileName, "r+");
-    if (f == nullptr) {
-        return -1;
-    }
-    int fd = fileno(f);
+    int fd = open(fileName, O_RDWR);
     return fd;
 }
 
@@ -61,10 +57,7 @@ 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);
     }
-    FILE* f = fdopen(fd, "r+");
-    if (f != nullptr) {
-        fclose(f);
-    }
+    close(fd);
     return ret;
 }
 
@@ -90,10 +83,7 @@ int AuthPause(int pid)
     if (ret < 0) {
         RME_LOGE("auth pause failed for pid %{public}d\n", pid);
     }
-    FILE* f = fdopen(fd, "r+");
-    if (f != nullptr) {
-        fclose(f);
-    }
+    close(fd);
     return ret;
 }
 
@@ -116,10 +106,7 @@ int AuthDelete(int pid)
     if (ret < 0) {
         RME_LOGE("auth delete failed for pid %{public}d\n", pid);
     }
-    FILE* f = fdopen(fd, "r+");
-    if (f != nullptr) {
-        fclose(f);
-    }
+    close(fd);
     return ret;
 }