diff --git a/kernel/BUILD.gn b/kernel/BUILD.gn
index 9b395cc0..f9f42cd1 100644
--- a/kernel/BUILD.gn
+++ b/kernel/BUILD.gn
@@ -28,6 +28,7 @@ group("kernel") {
         "open_posix_testsuite/conformance/interfaces_gn:${posix_interface_module}",
         "prctl:HatsPrctlTest",
         "purgeableMem:HatsPurgeable",
+        "rtginterface:HatsRtgInterfaceTest",
       ]
     } else {
       deps = [
@@ -39,6 +40,7 @@ group("kernel") {
         "open_posix_testsuite/conformance/interfaces_gn:${posix_interface_module}",
         "prctl:HatsPrctlTest",
         "purgeableMem:HatsPurgeable",
+        "rtginterface:HatsRtgInterfaceTest",
       ]
     }
   }
diff --git a/kernel/rtginterface/BUILD.gn b/kernel/rtginterface/BUILD.gn
new file mode 100644
index 00000000..994ce688
--- /dev/null
+++ b/kernel/rtginterface/BUILD.gn
@@ -0,0 +1,40 @@
+# Copyright (C) 2023 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("../../../tools/build/suite.gni")
+
+module_output_path = "hats/rtginterface"
+
+frame_aware_sched_deps = [ "//foundation/resourceschedule/frame_aware_sched/interfaces/innerkits/frameintf:frame_msg_intf" ]
+
+frame_aware_sched_public_deps = [ "//third_party/googletest:gtest_main" ]
+
+ohos_moduletest_suite("HatsRtgInterfaceTest") {
+  module_out_path = module_output_path
+
+  sources = [ "./rtg_interface_test.cpp" ]
+
+  include_dirs =
+      [ "//foundation/resourceschedule/frame_aware_sched/common/include" ]
+
+  deps = frame_aware_sched_deps
+
+  if (is_standard_system) {
+    public_deps = frame_aware_sched_public_deps
+  }
+
+  cflags = [ "-Wno-error" ]
+  external_deps = [ "c_utils:utils" ]
+  part_name = "xts_hats"
+  subsystem_name = "kernel"
+}
diff --git a/kernel/rtginterface/Test.json b/kernel/rtginterface/Test.json
new file mode 100644
index 00000000..f42a6cae
--- /dev/null
+++ b/kernel/rtginterface/Test.json
@@ -0,0 +1,18 @@
+{
+    "description": "Configuration for HatsRtgInterfaceTest Tests",
+    "kits": [
+        {
+            "push": [
+                "HatsRtgInterfaceTest->/data/local/tmp/HatsRtgInterfaceTest"
+            ],
+            "type": "PushKit"
+        }
+    ],
+    "driver": {
+        "native-test-timeout": "120000",
+        "type": "CppTest",
+        "module-name": "HatsRtgInterfaceTest",
+        "runtime-hint": "1s",
+        "native-test-device-path": "/data/local/tmp"
+    }
+}
\ No newline at end of file
diff --git a/kernel/rtginterface/rtg_interface_test.cpp b/kernel/rtginterface/rtg_interface_test.cpp
new file mode 100644
index 00000000..606c5fb4
--- /dev/null
+++ b/kernel/rtginterface/rtg_interface_test.cpp
@@ -0,0 +1,605 @@
+/*
+ * Copyright (c) 2023 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "gtest/gtest.h"
+
+#define private public
+#define protected public
+#include "rtg_interface.h"
+#undef private
+#undef protected
+
+namespace OHOS {
+namespace RME {
+using namespace testing;
+using namespace testing::ext;
+
+#define RTG_INTERFACE_SO_PATH "/system/lib/librtg_interface.z.so"
+
+enum rtg_type : int {
+    VIP = 0,
+    TOP_TASK_KEY,
+    NORMAL_TASK,
+    RTG_TYPE_MAX,
+};
+
+class RtgInterfaceTest : public testing::Test {
+public:
+    static void SetUpTestCase();
+    static void TearDownTestCase();
+    void SetUp();
+    void TearDown();
+};
+
+void RtgInterfaceTest::SetUpTestCase()
+{
+}
+
+void RtgInterfaceTest::TearDownTestCase()
+{
+}
+
+void RtgInterfaceTest::SetUp()
+{
+    // must enable rtg before use the interface
+    bool ret = EnableRtg(true);
+    EXPECT_EQ(ret, false);
+}
+
+void RtgInterfaceTest::TearDown()
+{
+    // disable rtg after use the interface
+    bool ret = EnableRtg(false);
+    EXPECT_EQ(ret, false);
+}
+
+/**
+ * @tc.name: RtgInterfaceCreateAndDestroy
+ * @tc.desc: Verify the CreateAndDestroy function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceCreateAndDestroy, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(NORMAL_TASK, 0);
+    EXPECT_GT(grpId, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceDestroyErrorGroup
+ * @tc.desc: Verify Destroy function with error param.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceDestroyErrorGroup, TestSize.Level1)
+{
+    int ret;
+    ret = DestroyRtgGrp(-1);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddRtg
+ * @tc.desc: Verify Rtg add function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddRtg, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    int pid = getpid();
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadToRtg(pid, grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddErrorThread
+ * @tc.desc: Verify Rtg add function with error pid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddErrorThread, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadToRtg(-1, grpId);
+    EXPECT_NE(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddErrorGroup
+ * @tc.desc: Verify Rtg add function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddErrorGroup, TestSize.Level1)
+{
+    int ret;
+    int pid = getpid();
+    ret = AddThreadToRtg(pid, -1);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddRtgs
+ * @tc.desc: Verify Rtg add multiple thread function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddRtgs, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    int pid = getpid();
+    vector<int> pids = {};
+    pids.push_back(pid);
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadsToRtg(pids, grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceClearRtg
+ * @tc.desc: Verify Rtg clear function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceClearRtg, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    int pid = getpid();
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadToRtg(pid, grpId);
+    EXPECT_EQ(ret, 0);
+    ret = ClearRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceClearErrorGroup
+ * @tc.desc: Verify Rtg clear function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceClearErrorGroup, TestSize.Level1)
+{
+    int ret;
+    ret = ClearRtgGrp(-1);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceBeginFrameFreq
+ * @tc.desc: Verify rtg frame start function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceBeginFrameFreq, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = BeginFrameFreq(grpId, 0);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceBeginFrameFreqWithErrorGrp
+ * @tc.desc: Verify rtg frame start function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceBeginFrameFreqWithErrorGrp, TestSize.Level1)
+{
+    int ret;
+    ret = BeginFrameFreq(-1, 0);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceEndFrameFreq
+ * @tc.desc: Verify rtg frame end function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceEndFrameFreq, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = EndFrameFreq(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceEndFrameFreqWithErrorGrp
+ * @tc.desc: Verify rtg frame end function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceEndFrameFreqWithErrorGrp, TestSize.Level1)
+{
+    int ret;
+    ret = EndFrameFreq(-1);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceEndScene
+ * @tc.desc: Verify rtg frame scene end function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceEndScene, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = EndScene(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceEndSceneWithErrorGrp
+ * @tc.desc: Verify rtg frame scene end function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceEndSceneWithErrorGrp, TestSize.Level1)
+{
+    int ret;
+    ret = EndScene(-1);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetMinUtil
+ * @tc.desc: Verify rtg minUtil set function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetMinUtil, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = SetMinUtil(grpId, 0);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetMinUtilWithErrorGrp
+ * @tc.desc: Verify rtg minUtil set function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetMinUtilWithErrorGrp, TestSize.Level1)
+{
+    int ret;
+    ret = SetMinUtil(-1, 0);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetMargin
+ * @tc.desc: Verify rtg margin set function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetMargin, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = SetMargin(grpId, 0);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetMarginWithErrorGrp
+ * @tc.desc: Verify rtg margin set function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetMarginWithErrorGrp, TestSize.Level1)
+{
+    int ret;
+    ret = SetMargin(-1, 0);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceListRtgThread
+ * @tc.desc: Verify rtg list function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceListRtgThread, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    vector<int> rs;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = ListRtgThread(grpId, &rs);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceListRtgThreadWithNullRes
+ * @tc.desc: Verify rtg thread list function with null vector input.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceListRtgThreadWithNullRes, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = ListRtgThread(grpId, nullptr);
+    EXPECT_NE(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceListRtgThreadWithErrorGrp
+ * @tc.desc: Verify rtg thread list function with error groupid.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceListRtgThreadWithErrorGrp, TestSize.Level1)
+{
+    int ret;
+    vector<int> rs;
+    ret = ListRtgThread(-1, &rs);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceListRtgGroup
+ * @tc.desc: Verify rtg list function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceListRtgGroup, TestSize.Level1)
+{
+    int ret;
+    vector<int> rs;
+    ret = ListRtgGroup(&rs);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceListRtgGroupWithNullRes
+ * @tc.desc: Verify rtg list function with null vector input.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceListRtgGroupWithNullRes, TestSize.Level1)
+{
+    int ret;
+    ret = ListRtgGroup(nullptr);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetAttr
+ * @tc.desc: Verify rtg attr set function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetAttr, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = SetFrameRateAndPrioType(grpId, 60, VIP);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetErrorAttr
+ * @tc.desc: Verify rtg attr set function with error attr param.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetErrorAttr, TestSize.Level1)
+{
+    int ret;
+    int grpId;
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = SetFrameRateAndPrioType(grpId, 90, -1);
+    EXPECT_NE(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetMaxVips
+ * @tc.desc: Verify rtg max vip num set function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetMaxVips, TestSize.Level1)
+{
+    int ret;
+    ret = SetMaxVipRtgs(2);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetErrorMaxVips
+ * @tc.desc: Verify rtg max vip num set function with 0 vip nums.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetErrorMaxVips, TestSize.Level1)
+{
+    int ret;
+    ret = SetMaxVipRtgs(0);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceSetLargeMaxVips
+ * @tc.desc: Verify rtg max vip num set function with too large vip nums.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceSetLargeMaxVips, TestSize.Level1)
+{
+    int ret;
+    ret = SetMaxVipRtgs(50000);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddClearMultipleThreads
+ * @tc.desc: Verify rtg multiple add  clear function.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddClearMultipleThreads, TestSize.Level1)
+{
+    int ret;
+    int pid[3];
+    vector<int> threads;
+    int grpId;
+    for (int i = 0; i < 3; i++) {
+        pid[i] = fork();
+        ASSERT_TRUE(pid[i] >= 0) << "> parent: fork errno = " << errno;
+        if (pid[i] == 0) {
+            usleep(50000);
+            _Exit(0);
+        }
+        threads.push_back(pid[i]);
+    }
+    grpId = CreateNewRtgGrp(NORMAL_TASK, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadsToRtg(threads, grpId);
+    EXPECT_EQ(ret, 0);
+    ret = ClearRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddClearVIPGroupMultipleThreads
+ * @tc.desc: Verify rtg multiple add clear about VIP group function .
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddClearVIPGroupMultipleThreads, TestSize.Level1)
+{
+    int ret;
+    int pid[5];
+    vector<int> threads;
+    int grpId;
+    for (int i = 0; i < 5; i++) {
+        pid[i] = fork();
+        ASSERT_TRUE(pid[i] >= 0) << "> parent: fork errno = " << errno;
+        if (pid[i] == 0) {
+            usleep(50000);
+            _Exit(0);
+        }
+        threads.push_back(pid[i]);
+    }
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadsToRtg(threads, grpId, 36);
+    EXPECT_EQ(ret, 0);
+    ret = ClearRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddDestoryRepeatCalls
+ * @tc.desc: Verify rtg multiple add destory repeat calls .
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddDestoryRepeatCalls, TestSize.Level1)
+{
+    int ret;
+    int pid[4];
+    vector<int> threads;
+    int grpId;
+    for (int i = 0; i < 4; i++) {
+        pid[i] = fork();
+        ASSERT_TRUE(pid[i] >= 0) << "> parent: fork errno = " << errno;
+        if (pid[i] == 0) {
+            usleep(50000);
+            _Exit(0);
+        }
+        threads.push_back(pid[i]);
+    }
+    grpId = CreateNewRtgGrp(VIP, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadsToRtg(threads, grpId);
+    EXPECT_EQ(ret, 0);
+    ret = AddThreadsToRtg(threads, grpId);
+    EXPECT_NE(ret, 0);
+    ret = ClearRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_NE(ret, 0);
+}
+
+/**
+ * @tc.name: RtgInterfaceAddMultipleThreadsOutOfLimit
+ * @tc.desc: Verify rtg multiple add function with out of limit threads.
+ * @tc.type: FUNC
+ */
+HWTEST_F(RtgInterfaceTest, RtgInterfaceAddMultipleThreadsOutOfLimit, TestSize.Level1)
+{
+    int ret;
+    int pid[8];
+    vector<int> threads;
+    int grpId;
+    for (int i = 0; i < 8; i++) {
+        pid[i] = fork();
+        ASSERT_TRUE(pid[i] >= 0) << "> parent: fork errno = " << errno;
+        if (pid[i] == 0) {
+            usleep(50000);
+            _Exit(0);
+        }
+        threads.push_back(pid[i]);
+    }
+    grpId = CreateNewRtgGrp(NORMAL_TASK, 0);
+    EXPECT_GT(grpId, 0);
+    ret = AddThreadsToRtg(threads, grpId);
+    EXPECT_NE(ret, 0);
+    ret = DestroyRtgGrp(grpId);
+    EXPECT_EQ(ret, 0);
+}
+} // namespace RME
+} // namespace OHOS