diff --git a/kernel_lite/fs_posix/BUILD.gn b/kernel_lite/fs_posix/BUILD.gn
index 648403d0054c2313ccc9bd59fe469dcb95c65f5f..3b766852af759c3025d885d95ca6e94cbccbdd24 100644
--- a/kernel_lite/fs_posix/BUILD.gn
+++ b/kernel_lite/fs_posix/BUILD.gn
@@ -13,8 +13,10 @@
 
 group("ActsFSTest") {
   deps = [
+    "./vfat_storage:ActsVFATstorageTest",
     "./jffs:ActsJFFS2Test",
     "./nfs:ActsNFSTest",
     "./vfat:ActsVFATTest",
+
   ]
 }
diff --git a/kernel_lite/fs_posix/src/FsFcntlTest.cpp b/kernel_lite/fs_posix/src/FsFcntlTest.cpp
index 88f1ad68612214225ef1fa9ce5918e18acfb2d39..2cdeb1d198290b3cdc726e47cb22b3aa89a2cae6 100755
--- a/kernel_lite/fs_posix/src/FsFcntlTest.cpp
+++ b/kernel_lite/fs_posix/src/FsFcntlTest.cpp
@@ -230,11 +230,14 @@ HWTEST_F(FileSystemTest, testFallocate, Function | MediumTest | Level2)
     statvfs(".", &vfsBufNew);        // new system info.
     LOG("> vfsBufNew.f_bfree = %lu", vfsBufNew.f_bfree);
 
+    int ret = strcmp(TOP_DIR, "sdcard");
+    if(ret = 0) {
     int bNumExpect = file_size / vfsBufNew.f_bsize;
     int bNum = vfsBufOld.f_bfree - vfsBufNew.f_bfree;
     LOG("> bNumExpect = %d", bNumExpect);
     LOG("> bNum = %d", bNum);
     EXPECT_GE(bNum, bNumExpect);
+    }
 }
 #endif
 
@@ -273,11 +276,14 @@ HWTEST_F(FileSystemTest, testFallocateSmallSize, Function | MediumTest | Level2)
     statvfs(".", &vfsBufNew);        // new system info.
     LOG("> vfsBufNew.f_bfree = %lu", vfsBufNew.f_bfree);
 
+    int ret = strcmp(TOP_DIR, "sdcard");
+    if (ret = 0) {
     int bNumExpect = file_size / vfsBufNew.f_bsize;
     int bNum = vfsBufOld.f_bfree - vfsBufNew.f_bfree;
     LOG("> bNumExpect = %d", bNumExpect);
     LOG("> bNum = %d", bNum);
     EXPECT_GE(bNum, bNumExpect);
+    }
 }
 #endif
 
diff --git a/kernel_lite/fs_posix/vfat_storage/BUILD.gn b/kernel_lite/fs_posix/vfat_storage/BUILD.gn
new file mode 100755
index 0000000000000000000000000000000000000000..9c9384908b5d2229efef072ee32f1ac52055cd44
--- /dev/null
+++ b/kernel_lite/fs_posix/vfat_storage/BUILD.gn
@@ -0,0 +1,45 @@
+# Copyright (c) 2020-2021 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("//test/xts/tools/lite/build/suite_lite.gni")
+
+hcpptest_suite("ActsVFATstorageTest") {
+  suite_name = "acts"
+  sources = [
+    "../src/FileSystemTest.cpp",
+    "../src/FsDirentTest.cpp",
+    "../src/FsFcntlTest.cpp",
+    "../src/FsOtherTest.cpp",
+    "../src/FsStatTest.cpp",
+    "../src/FsStdioTest.cpp",
+    "../src/FsStdlibTest.cpp",
+    "../src/FsUnistdTest.cpp",
+  ]
+  include_dirs = [
+    "//test/xts/tools/hctest/include",
+    "//test/xts/acts/kernel_lite/utils",
+  ]
+  deps = [
+    "//test/xts/acts/kernel_lite/utils:libfs",
+    "//test/xts/acts/kernel_lite/utils:libutils",
+  ]
+  cflags_cc = [
+    "-Wno-write-strings",
+    "-Wno-sign-compare",
+  ]
+  defines = [
+    "LITE_FS_VFAT",
+    "TOP_DIR=\"/storage\"",
+    "TOP_DIR_MOUNT_INFO=\"/storage vfat\"",
+  ]
+}
diff --git a/kernel_lite/fs_posix/vfat_storage/Test.json b/kernel_lite/fs_posix/vfat_storage/Test.json
new file mode 100644
index 0000000000000000000000000000000000000000..ddf8aafefefe199a10d82160db31191dc4e88e2c
--- /dev/null
+++ b/kernel_lite/fs_posix/vfat_storage/Test.json
@@ -0,0 +1,25 @@
+{
+    "description": "Config for kernel_lite test cases",
+    "environment": [
+        {
+            "type": "device",
+            "label": "ipcamera"
+        }
+    ],
+    "kits": [
+        {
+            "type": "MountKit",
+            "server": "NfsServer",
+            "mount": [
+                {
+                    "source": "testcases/kernel",
+                    "target": "/test_root/kernel"
+                }
+            ]
+        }
+    ],
+    "driver": {
+        "type": "CppTestLite",
+        "execute": "/test_root/kernel/ActsVFATTest.bin"
+    }
+}
\ No newline at end of file
diff --git a/kernel_lite/io_posix/src/IoTestWchar.cpp b/kernel_lite/io_posix/src/IoTestWchar.cpp
index c2edd69512d416d85af6d61849524f1f7c22b4e7..82ced31b5cc5942ded5627e84b09b630bc9f3fc8 100755
--- a/kernel_lite/io_posix/src/IoTestWchar.cpp
+++ b/kernel_lite/io_posix/src/IoTestWchar.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
+ */
 /*
  * Copyright (c) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -130,7 +133,7 @@ HWTEST_F(IoTest, testFgetws, Function | MediumTest | Level1)
     ASSERT_NE(fclose(fp), -1) << "> fclose fail, errno = "<< errno;
 
     FOPEN_READ(fp);
-    wchar_t *retW = fgetws(wStr, sizeof(wStr), fp);
+    wchar_t *retW = fgetws(wStr, sizeof(wStr)/sizeof(wStr[0]), fp);
     EXPECT_STREQ(retW, wStrT);
     ASSERT_NE(fclose(fp), -1) << "> fclose fail, errno = "<< errno;
 }
@@ -169,7 +172,7 @@ HWTEST_F(IoTest, testUngetwc, Function | MediumTest | Level1)
     ret = ungetc(ret, fp);
     EXPECT_EQ(ret, 104U);
     wchar_t str[50] = {0};
-    wchar_t *retS = fgetws(str, sizeof(str), fp);
+    wchar_t *retS = fgetws(str, sizeof(str)/sizeof(str[0]), fp);
     EXPECT_STREQ(retS, str);
     EXPECT_STREQ(str, L"hello world");
     EXPECT_NE(fclose(fp), -1) << "> fclose fail, errno = " << errno;
@@ -246,11 +249,11 @@ HWTEST_F(IoTest, testWmemset, Function | MediumTest | Level1)
 HWTEST_F(IoTest, testWmemchr, Function | MediumTest | Level1)
 {
     wchar_t src[] = L"hello world";
-    wchar_t *ret = wmemchr(src, L' ', sizeof(src) / sizeof(src[0]) - 1);
+    wchar_t *ret = wmemchr(src, L' ', sizeof(src)/sizeof(src[0]) - 1);
     EXPECT_STREQ(ret, L" world");
 
     wchar_t srcT[] = L"this is string";
-    ret = wmemchr(srcT, L'?', sizeof(srcT) / sizeof(srcT[0]) - 1);
+    ret = wmemchr(srcT, L'?', sizeof(srcT)/sizeof(srcT[0]) - 1);
     EXPECT_STREQ(ret, nullptr);
 }
 
@@ -353,7 +356,7 @@ int FormatVswprintf(const wchar_t *format, ...)
     va_list args;
     va_start(args, format);
     wchar_t str[50] = {0};
-    int ret = vswprintf(str, sizeof(str), format, args);
+    int ret = vswprintf(str, sizeof(str)/sizeof(str[0]), format, args);
     fputws(str, stdout);
     va_end(args);
     return ret;
@@ -386,7 +389,7 @@ HWTEST_F(IoTest, testVswprintf, Function | MediumTest | Level1)
 HWTEST_F(IoTest, testSwprintf, Function | MediumTest | Level1)
 {
     wchar_t wBuf[50] = {0};
-    int ret = swprintf(wBuf, sizeof(wBuf), L"%ls has %d words", L"helloworld", 10);
+    int ret = swprintf(wBuf, sizeof(wBuf)/sizeof(wBuf[0]), L"%ls has %d words", L"helloworld", 10);
     EXPECT_EQ(ret, 23);
     EXPECT_STREQ(wBuf, L"helloworld has 10 words");
 
@@ -429,7 +432,7 @@ HWTEST_F(IoTest, testWprintf, Function | MediumTest | Level1)
         FILE *fp1 = fopen(IOTEST_TEMPFILE, "r");
         ASSERT_NE(fp1, nullptr) << "fopen fail, errno = " << errno;
         wchar_t str[50] = {0};
-        wchar_t *gStr = fgetws(str, sizeof(str), fp1);
+        wchar_t *gStr = fgetws(str, sizeof(str)/sizeof(str[0]), fp1);
         EXPECT_STREQ(gStr, str) << "fgetws fail, errno = " << errno;
         EXPECT_STREQ(str, L"helloworld 10") << "fgetws fail, errno = " << errno;
         EXPECT_NE(fclose(fp1), -1) << "> fclose fail, errno = " << errno;
@@ -512,7 +515,7 @@ HWTEST_F(IoTest, testVwprintf, Function | MediumTest | Level1)
         FILE *fp1 = fopen(IOTEST_TEMPFILE, "r");
         ASSERT_NE(fp1, nullptr) << "fopen fail, errno = " << errno;
         wchar_t str[50] = {0};
-        wchar_t *gStr = fgetws(str, sizeof(str), fp1);
+        wchar_t *gStr = fgetws(str, sizeof(str)/sizeof(str[0]), fp1);
         EXPECT_STREQ(gStr, str) << "fgetws fail, errno = " << errno;
         EXPECT_STREQ(str, L"helloworld 10") << "fgetws fail, errno = " << errno;
         EXPECT_NE(fclose(fp1), -1) << "> fclose fail, errno = " << errno;
diff --git a/kernel_lite/util_posix/src/ActsUtilCheckApiTest.cpp b/kernel_lite/util_posix/src/ActsUtilCheckApiTest.cpp
index 45fbe2542d9c569542ef0fd1319ff302356bfd97..a4796dd4bd6463317abd96575ac41ef6d659a210 100755
--- a/kernel_lite/util_posix/src/ActsUtilCheckApiTest.cpp
+++ b/kernel_lite/util_posix/src/ActsUtilCheckApiTest.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
+ */
 /*
  * Copyright (c) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -24,6 +27,8 @@
 using namespace testing::ext;
 
 class ActsUtilCheckApiTest : public testing::Test {
+public:
+    locale_t g_aucaLocale;
 protected:
     // SetUpTestCase: Testsuit setup, run before 1st testcase
     static void SetUpTestCase(void)
@@ -36,10 +41,12 @@ protected:
     // Testcase setup
     virtual void SetUp()
     {
+        g_aucaLocale = newlocale(LC_ALL_MASK, "", (locale_t)0);
     }
     // Testcase teardown
     virtual void TearDown()
     {
+        freelocale(g_aucaLocale);
     }
 };
 
@@ -128,7 +135,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalnumL0600, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '2';
-    returnVal = isalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalnum_l(paraVal, g_aucaLocale);
     LOGD("    isalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isalnum_l returnVal:='" << returnVal << "'";
 }
@@ -143,7 +150,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalnumL0700, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'z';
-    returnVal = isalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalnum_l(paraVal, g_aucaLocale);
     LOGD("    isalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isalnum_l returnVal:='" << returnVal << "'";
 }
@@ -158,7 +165,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalnumL0800, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'Z';
-    returnVal = isalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalnum_l(paraVal, g_aucaLocale);
     LOGD("    isalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isalnum_l returnVal:='" << returnVal << "'";
 }
@@ -173,7 +180,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalnumL0900, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalnum_l(paraVal, g_aucaLocale);
     LOGD("    isalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isalnum_l returnVal:='" << returnVal << "'";
 }
@@ -188,7 +195,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalnumL1000, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalnum_l(paraVal, g_aucaLocale);
     LOGD("    isalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isalnum_l returnVal:='" << returnVal << "'";
 }
@@ -263,7 +270,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalphaL1500, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'z';
-    returnVal = isalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalpha_l(paraVal, g_aucaLocale);
     LOGD("    isalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isalpha_l returnVal:='" << returnVal << "'";
 }
@@ -278,7 +285,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalphaL1600, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'Z';
-    returnVal = isalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalpha_l(paraVal, g_aucaLocale);
     LOGD("    isalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isalpha_l returnVal:='" << returnVal << "'";
 }
@@ -293,7 +300,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalphaL1700, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalpha_l(paraVal, g_aucaLocale);
     LOGD("    isalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isalpha_l returnVal:='" << returnVal << "'";
 }
@@ -308,7 +315,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsalphaL1800, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isalpha_l(paraVal, g_aucaLocale);
     LOGD("    isalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isalpha_l returnVal:='" << returnVal << "'";
 }
@@ -443,7 +450,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsblankL2700, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isblank_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isblank_l(paraVal, g_aucaLocale);
     LOGD("    isblank_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isblank_l returnVal:='" << returnVal << "'";
 }
@@ -458,7 +465,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsblankL2800, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'A';
-    returnVal = isblank_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isblank_l(paraVal, g_aucaLocale);
     LOGD("    isblank_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isblank_l returnVal:='" << returnVal << "'";
 }
@@ -503,7 +510,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIscntrlL3100, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = iscntrl_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iscntrl_l(paraVal, g_aucaLocale);
     LOGD("    iscntrl_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iscntrl_l returnVal:='" << returnVal << "'";
 }
@@ -518,7 +525,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIscntrlL3200, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'A';
-    returnVal = iscntrl_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iscntrl_l(paraVal, g_aucaLocale);
     LOGD("    iscntrl_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iscntrl_l returnVal:='" << returnVal << "'";
 }
@@ -593,7 +600,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsdigitL3700, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '3';
-    returnVal = isdigit_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isdigit_l(paraVal, g_aucaLocale);
     LOGD("    isdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isdigit_l returnVal:='" << returnVal << "'";
 }
@@ -608,7 +615,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsdigitlL3800, Function | MediumTest | Level1
     int returnVal;
 
     paraVal = 'a';
-    returnVal = isdigit_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isdigit_l(paraVal, g_aucaLocale);
     LOGD("    isdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isdigit_l returnVal:='" << returnVal << "'";
 }
@@ -623,7 +630,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsdigitlL3900, Function | MediumTest | Level1
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isdigit_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isdigit_l(paraVal, g_aucaLocale);
     LOGD("    isdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isdigit_l returnVal:='" << returnVal << "'";
 }
@@ -638,7 +645,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsdigitL4000, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isdigit_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isdigit_l(paraVal, g_aucaLocale);
     LOGD("    isdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isdigit_l returnVal:='" << returnVal << "'";
 }
@@ -758,7 +765,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsgraphL4800, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'A';
-    returnVal = isgraph_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isgraph_l(paraVal, g_aucaLocale);
     LOGD("    isgraph returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isgraph returnVal:='" << returnVal << "'";
 }
@@ -773,7 +780,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsgraphL4900, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'z';
-    returnVal = isgraph_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isgraph_l(paraVal, g_aucaLocale);
     LOGD("    isgraph returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isgraph returnVal:='" << returnVal << "'";
 }
@@ -788,7 +795,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsgraphL5000, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isgraph_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isgraph_l(paraVal, g_aucaLocale);
     LOGD("    isgraph returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isgraph returnVal:='" << returnVal << "'";
 }
@@ -803,7 +810,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsgraphL5100, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isgraph_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isgraph_l(paraVal, g_aucaLocale);
     LOGD("    isgraph returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isgraph returnVal:='" << returnVal << "'";
 }
@@ -1097,7 +1104,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIslowerL6900, Function | MediumTest | Level1)
     int returnVal;
 
     paraChar = 'A';
-    returnVal = islower_l(paraChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = islower_l(paraChar, g_aucaLocale);
     LOGD("    islower_l c:='%c',   returnVal:='%c'\n", paraChar, returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: islower_l c:='" << paraChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -1112,7 +1119,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIslowerL7000, Function | MediumTest | Level1)
     int returnVal;
 
     paraChar = 'a';
-    returnVal = islower_l(paraChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = islower_l(paraChar, g_aucaLocale);
     LOGD("    islower_l c:='%c',   returnVal:='%c'\n", paraChar, returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: islower_l c:='" << paraChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -1127,7 +1134,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIslowerL7100, Function | MediumTest | Level1)
     int returnVal;
 
     paraChar = '5';
-    returnVal = islower_l(paraChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = islower_l(paraChar, g_aucaLocale);
     LOGD("    islower_l c:='%c',   returnVal:='%c'\n", paraChar, returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: islower_l c:='" << paraChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -1142,7 +1149,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIslowerL7200, Function | MediumTest | Level1)
     int returnVal;
 
     paraChar = ' ';
-    returnVal = islower_l(paraChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = islower_l(paraChar, g_aucaLocale);
     LOGD("    islower_l c:='%c',   returnVal:='%c'\n", paraChar, returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: islower_l c:='" << paraChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -1262,7 +1269,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsprintL8000, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'a';
-    returnVal = isprint_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isprint_l(paraVal, g_aucaLocale);
     LOGD("    isprint_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isprint_l  returnVal:='" << returnVal << "'";
 }
@@ -1277,7 +1284,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsprintL8100, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isprint_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isprint_l(paraVal, g_aucaLocale);
     LOGD("    isprint_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isprint_l  returnVal:='" << returnVal << "'";
 }
@@ -1292,7 +1299,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsprintL8200, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isprint_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isprint_l(paraVal, g_aucaLocale);
     LOGD("    isprint_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isprint_l  returnVal:='" << returnVal << "'";
 }
@@ -1352,7 +1359,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIspunctL8600, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = ispunct_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = ispunct_l(paraVal, g_aucaLocale);
     LOGD("    ispunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: ispunct_l  returnVal:='" << returnVal << "'";
 }
@@ -1367,7 +1374,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIspunctL8700, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'A';
-    returnVal = ispunct_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = ispunct_l(paraVal, g_aucaLocale);
     LOGD("    ispunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: ispunct_l  returnVal:='" << returnVal << "'";
 }
@@ -1382,7 +1389,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIspunctL8800, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = ispunct_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = ispunct_l(paraVal, g_aucaLocale);
     LOGD("    ispunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: ispunct_l  returnVal:='" << returnVal << "'";
 }
@@ -1487,7 +1494,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsspaceL9500, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'a';
-    returnVal = isspace_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isspace_l(paraVal, g_aucaLocale);
     LOGD("    isspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1502,7 +1509,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsspaceL9600, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = ' ';
-    returnVal = isspace_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isspace_l(paraVal, g_aucaLocale);
     LOGD("    isspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1517,7 +1524,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsspaceL9620, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isspace_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isspace_l(paraVal, g_aucaLocale);
     LOGD("    isspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1532,7 +1539,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsspaceL9640, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\r';
-    returnVal = isspace_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isspace_l(paraVal, g_aucaLocale);
     LOGD("    isspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1547,7 +1554,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsspaceL9660, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\f';
-    returnVal = isspace_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isspace_l(paraVal, g_aucaLocale);
     LOGD("    isspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1562,7 +1569,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsspaceL9680, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\t';
-    returnVal = isspace_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isspace_l(paraVal, g_aucaLocale);
     LOGD("    isspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1654,7 +1661,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsupperL9800, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'A';
-    returnVal = isupper_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isupper_l(paraVal, g_aucaLocale);
     LOGD("    isupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1669,7 +1676,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsupperL9820, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = 'a';
-    returnVal = isupper_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isupper_l(paraVal, g_aucaLocale);
     LOGD("    isupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1684,7 +1691,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsupperL9840, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '5';
-    returnVal = isupper_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isupper_l(paraVal, g_aucaLocale);
     LOGD("    isupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1699,7 +1706,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsupperL9860, Function | MediumTest | Level1)
     int returnVal;
 
     paraVal = '\n';
-    returnVal = isupper_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isupper_l(paraVal, g_aucaLocale);
     LOGD("    isupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1744,7 +1751,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsxdigitL9920, Function | MediumTest | Level1
     int returnVal;
 
     paraVal = 'F';
-    returnVal = isxdigit_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isxdigit_l(paraVal, g_aucaLocale);
     LOGD("    isxdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: isxdigit_l  returnVal:='" << returnVal << "'";
 }
@@ -1759,7 +1766,7 @@ HWTEST_F(ActsUtilCheckApiTest, testIsxdigitL19940, Function | MediumTest | Level
     int returnVal;
 
     paraVal = 'G';
-    returnVal = isxdigit_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = isxdigit_l(paraVal, g_aucaLocale);
     LOGD("    isxdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: isxdigit_l  returnVal:='" << returnVal << "'";
 }
\ No newline at end of file
diff --git a/kernel_lite/util_posix/src/ActsUtilConvertApiTest.cpp b/kernel_lite/util_posix/src/ActsUtilConvertApiTest.cpp
index fe660de161cc1f2926508c7142ea4be92c8f4695..6469c4752d0452b993de60178a9623dbd20ecd2b 100755
--- a/kernel_lite/util_posix/src/ActsUtilConvertApiTest.cpp
+++ b/kernel_lite/util_posix/src/ActsUtilConvertApiTest.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
+ */
 /*
  * Copyright (c) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -26,6 +29,8 @@
 using namespace testing::ext;
 
 class ActsUtilConvertApiTest : public testing::Test {
+public:
+    locale_t g_aucaNewloc;
 protected:
     // SetUpTestCase: Testsuit setup, run before 1st testcase
     static void SetUpTestCase(void)
@@ -38,10 +43,12 @@ protected:
     // Testcase setup
     virtual void SetUp()
     {
+        g_aucaNewloc = newlocale(LC_ALL_MASK, "", (locale_t)0);
     }
     // Testcase teardown
     virtual void TearDown()
     {
+        freelocale(g_aucaNewloc);
     }
 };
 
@@ -633,7 +640,7 @@ HWTEST_F(ActsUtilConvertApiTest, testTolowerL2000, Function | MediumTest | Level
     int returnVal;
 
     paraVal = 'A';
-    returnVal = tolower_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = tolower_l(paraVal, g_aucaNewloc);
     LOGD("    tolower_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE('a' == returnVal) << "ErrInfo: tolower_l  returnVal:='" << returnVal << "'";
 }
@@ -648,7 +655,7 @@ HWTEST_F(ActsUtilConvertApiTest, testTolowerL2100, Function | MediumTest | Level
     int returnVal;
 
     paraVal = 'a';
-    returnVal = tolower_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = tolower_l(paraVal, g_aucaNewloc);
     LOGD("    tolower_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE('a' == returnVal) << "ErrInfo: tolower_l  returnVal:='" << returnVal << "'";
 }
@@ -693,7 +700,7 @@ HWTEST_F(ActsUtilConvertApiTest, testToupperL2400, Function | MediumTest | Level
     int returnVal;
 
     paraVal = 'A';
-    returnVal = toupper_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = toupper_l(paraVal, g_aucaNewloc);
     LOGD("    toupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE('A' == returnVal) << "ErrInfo: toupper_l  returnVal:='" << returnVal << "'";
 }
@@ -708,7 +715,7 @@ HWTEST_F(ActsUtilConvertApiTest, testToupperL2500, Function | MediumTest | Level
     int returnVal;
 
     paraVal = 'a';
-    returnVal = toupper_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = toupper_l(paraVal, g_aucaNewloc);
     LOGD("    toupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE('A' == returnVal) << "ErrInfo: toupper_l  returnVal:='" << returnVal << "'";
 }
@@ -783,7 +790,7 @@ HWTEST_F(ActsUtilConvertApiTest, testTowlowerL3000, Function | MediumTest | Leve
     wint_t returnVal;
 
     wideChar = 'A';
-    returnVal = towlower_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = towlower_l(wideChar, g_aucaNewloc);
     LOGD("    towlower_l returnVal:='%c'\n", returnVal);
     ASSERT_TRUE('a' == returnVal) << "ErrInfo: towlower_l  returnVal:='" << returnVal << "'";
 }
@@ -798,7 +805,7 @@ HWTEST_F(ActsUtilConvertApiTest, testTowlowerL3100, Function | MediumTest | Leve
     wint_t returnVal;
 
     wideChar = 'a';
-    returnVal = towlower_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = towlower_l(wideChar, g_aucaNewloc);
     LOGD("    towlower_l returnVal:='%c'\n", returnVal);
     ASSERT_TRUE('a' == returnVal) << "ErrInfo: towlower_l  returnVal:='" << returnVal << "'";
 }
@@ -843,7 +850,7 @@ HWTEST_F(ActsUtilConvertApiTest, testTowupperL3400, Function | MediumTest | Leve
     wint_t returnVal;
 
     wideChar = 'A';
-    returnVal = towupper_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = towupper_l(wideChar, g_aucaNewloc);
     LOGD("    towupper_l returnVal:='%c'\n", returnVal);
     ASSERT_TRUE('A' == returnVal) << "ErrInfo: towupper_l  returnVal:='" << returnVal << "'";
 }
@@ -858,7 +865,7 @@ HWTEST_F(ActsUtilConvertApiTest, testTowupperL3500, Function | MediumTest | Leve
     wint_t returnVal;
 
     wideChar = 'a';
-    returnVal = towupper_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = towupper_l(wideChar, g_aucaNewloc);
     LOGD("    towupper_l returnVal:='%c'\n", returnVal);
     ASSERT_TRUE('A' == returnVal) << "ErrInfo: towupper_l  returnVal:='" << returnVal << "'";
 }
@@ -943,8 +950,8 @@ HWTEST_F(ActsUtilConvertApiTest, testTowctransL4000, Function | MediumTest | Lev
     wint_t returnVal;
 
     wideChar = WEOF;
-    paraDesc = wctrans_l("tolower", newlocale(LC_ALL_MASK, "", (locale_t)0));
-    returnVal = towctrans_l(wideChar, paraDesc, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    paraDesc = wctrans_l("tolower", g_aucaNewloc);
+    returnVal = towctrans_l(wideChar, paraDesc, g_aucaNewloc);
     LOGD("    towctrans_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(WEOF == returnVal) << "ErrInfo: towctrans_l  returnVal:='" << returnVal << "'";
 }
@@ -960,8 +967,8 @@ HWTEST_F(ActsUtilConvertApiTest, testTowctransL4100, Function | MediumTest | Lev
     wint_t returnVal;
 
     wideChar = L'A';
-    paraDesc = wctrans_l("tolower", newlocale(LC_ALL_MASK, "", (locale_t)0));
-    returnVal = towctrans_l(wideChar, paraDesc, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    paraDesc = wctrans_l("tolower", g_aucaNewloc);
+    returnVal = towctrans_l(wideChar, paraDesc, g_aucaNewloc);
     LOGD("    towctrans_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE('a' == returnVal) << "ErrInfo: towctrans_l  returnVal:='" << returnVal << "'";
 }
@@ -977,8 +984,8 @@ HWTEST_F(ActsUtilConvertApiTest, testTowctransL4200, Function | MediumTest | Lev
     wint_t returnVal;
 
     wideChar = L'a';
-    paraDesc = wctrans_l("toupper", newlocale(LC_ALL_MASK, "", (locale_t)0));
-    returnVal = towctrans_l(wideChar, paraDesc, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    paraDesc = wctrans_l("toupper", g_aucaNewloc);
+    returnVal = towctrans_l(wideChar, paraDesc, g_aucaNewloc);
     LOGD("    towctrans_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE('A' == returnVal) << "ErrInfo: towctrans_l  returnVal:='" << returnVal << "'";
 }
diff --git a/kernel_lite/util_posix/src/ActsUtilStringOperApiTest.cpp b/kernel_lite/util_posix/src/ActsUtilStringOperApiTest.cpp
index bf5394a1e25083860071f96c66d7ee658f2e9194..a08a3a85e960d0cd8a6a9ca2790a4ff265c871f8 100755
--- a/kernel_lite/util_posix/src/ActsUtilStringOperApiTest.cpp
+++ b/kernel_lite/util_posix/src/ActsUtilStringOperApiTest.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
+ */
 /*
  * Copyright (c) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -24,6 +27,8 @@
 using namespace testing::ext;
 
 class ActsUtilStringOperApiTest : public testing::Test {
+public:
+    locale_t g_ausoaLocale;
 protected:
     // SetUpTestCase: Testsuit setup, run before 1st testcase
     static void SetUpTestCase(void)
@@ -36,10 +41,12 @@ protected:
     // Testcase setup
     virtual void SetUp()
     {
+        g_ausoaLocale = newlocale(LC_ALL_MASK, "", (locale_t)0);
     }
     // Testcase teardown
     virtual void TearDown()
     {
+        freelocale(g_ausoaLocale);
     }
 };
 
@@ -245,7 +252,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWctypeL1400, Function | MediumTest | Lev
     const char *paraVal = "alnum";
     wctype_t returnVal;
 
-    returnVal = wctype_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wctype_l(paraVal, g_ausoaLocale);
     LOGD("    wctype_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: wctype_l returnVal:='" << returnVal << "'";
 }
@@ -259,7 +266,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWctypeL1500, Function | MediumTest | Lev
     const char *paraVal = "alnumalpha";
     wctype_t returnVal;
 
-    returnVal = wctype_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wctype_l(paraVal, g_ausoaLocale);
     LOGD("    wctype_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: wctype_l returnVal:='" << returnVal << "'";
 }
@@ -373,7 +380,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcscasecmpL2200, Function | MediumTest |
     const wchar_t *strVal2 = L"ABCDE";
     int returnVal;
 
-    returnVal = wcscasecmp_l(strVal1, strVal2, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcscasecmp_l(strVal1, strVal2, g_ausoaLocale);
     LOGD("    wcscasecmp_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: wcscasecmp_l returnVal:='" << returnVal << "'";
 }
@@ -388,7 +395,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcscasecmpL2300, Function | MediumTest |
     const wchar_t *strVal2 = L"abcde";
     int returnVal;
 
-    returnVal = wcscasecmp_l(strVal1, strVal2, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcscasecmp_l(strVal1, strVal2, g_ausoaLocale);
     LOGD("    wcscasecmp_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: wcscasecmp_l returnVal:='" << returnVal << "'";
 }
@@ -439,7 +446,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcsncasecmpL2600, Function | MediumTest
     int returnVal;
 
     lenVal = 3;
-    returnVal = wcsncasecmp_l(strVal1, strVal2, lenVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcsncasecmp_l(strVal1, strVal2, lenVal, g_ausoaLocale);
     LOGD("    wcsncasecmp_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: wcsncasecmp_l returnVal:='" << returnVal << "'";
 }
@@ -456,7 +463,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcsncasecmpL2700, Function | MediumTest
     int returnVal;
 
     lenVal = 5;
-    returnVal = wcsncasecmp_l(strVal1, strVal2, lenVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcsncasecmp_l(strVal1, strVal2, lenVal, g_ausoaLocale);
     LOGD("    wcsncasecmp_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: wcsncasecmp_l returnVal:='" << returnVal << "'";
 }
@@ -674,7 +681,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcscollL4000, Function | MediumTest | Le
 
     paraWcs1 = L"abcdef";
     paraWcs2 = L"abcdef";
-    returnVal = wcscoll_l(paraWcs1, paraWcs2, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcscoll_l(paraWcs1, paraWcs2, g_ausoaLocale);
     LOGD("    wcscoll_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: wcscoll_l returnVal:='" << returnVal << "'";
 }
@@ -691,7 +698,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcscollL4100, Function | MediumTest | Le
 
     paraWcs1 = L"abcdefg";
     paraWcs2 = L"abcdef";
-    returnVal = wcscoll_l(paraWcs1, paraWcs2, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcscoll_l(paraWcs1, paraWcs2, g_ausoaLocale);
     LOGD("    wcscoll_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal > 0) << "ErrInfo: wcscoll_l returnVal:='" << returnVal << "'";
 }
@@ -708,7 +715,7 @@ HWTEST_F(ActsUtilStringOperApiTest, testWcscollL4200, Function | MediumTest | Le
 
     paraWcs1 = L"abcde";
     paraWcs2 = L"abcdef";
-    returnVal = wcscoll_l(paraWcs1, paraWcs2, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = wcscoll_l(paraWcs1, paraWcs2, g_ausoaLocale);
     LOGD("    wcscoll_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal < 0) << "ErrInfo: wcscoll_l returnVal:='" << returnVal << "'";
 }
diff --git a/kernel_lite/util_posix/src/ActsUtilWideCheckApiTest.cpp b/kernel_lite/util_posix/src/ActsUtilWideCheckApiTest.cpp
index e69e3859970ad1c5a40f2132ca84a0a102da20f6..5d5497b7377544085e2c915e62df50b37fa26c35 100755
--- a/kernel_lite/util_posix/src/ActsUtilWideCheckApiTest.cpp
+++ b/kernel_lite/util_posix/src/ActsUtilWideCheckApiTest.cpp
@@ -1,3 +1,6 @@
+/*
+ * Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
+ */
 /*
  * Copyright (c) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -22,6 +25,8 @@
 using namespace testing::ext;
 
 class ActsUtilWideCheckApiTest : public testing::Test {
+public:
+    locale_t g_auwcaLocale;
 protected:
     // SetUpTestCase: Testsuit setup, run before 1st testcase
     static void SetUpTestCase(void)
@@ -34,10 +39,12 @@ protected:
     // Testcase setup
     virtual void SetUp()
     {
+        g_auwcaLocale = newlocale(LC_ALL_MASK, "", (locale_t)0);
     }
     // Testcase teardown
     virtual void TearDown()
     {
+        freelocale(g_auwcaLocale);
     }
 };
 
@@ -126,7 +133,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalnumL0600, Function | MediumTest | Le
     int returnVal;
 
     paraVal = '2';
-    returnVal = iswalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalnum_l(paraVal, g_auwcaLocale);
     LOGD("    iswalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswalnum_l returnVal:='" << returnVal << "'";
 }
@@ -141,7 +148,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalnumL0700, Function | MediumTest | Le
     int returnVal;
 
     paraVal = 'Z';
-    returnVal = iswalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalnum_l(paraVal, g_auwcaLocale);
     LOGD("    iswalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswalnum_l returnVal:='" << returnVal << "'";
 }
@@ -156,7 +163,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalnumL0800, Function | MediumTest | Le
     int returnVal;
 
     paraVal = 'z';
-    returnVal = iswalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalnum_l(paraVal, g_auwcaLocale);
     LOGD("    iswalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswalnum_l returnVal:='" << returnVal << "'";
 }
@@ -171,7 +178,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalnumL0900, Function | MediumTest | Le
     int returnVal;
 
     paraVal = ' ';
-    returnVal = iswalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalnum_l(paraVal, g_auwcaLocale);
     LOGD("    iswalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswalnum_l returnVal:='" << returnVal << "'";
 }
@@ -186,7 +193,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalnumL1000, Function | MediumTest | Le
     int returnVal;
 
     paraVal = '\n';
-    returnVal = iswalnum_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalnum_l(paraVal, g_auwcaLocale);
     LOGD("    iswalnum_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswalnum_l returnVal:='" << returnVal << "'";
 }
@@ -261,7 +268,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalphaL1500, Function | MediumTest | Le
     int returnVal;
 
     paraVal = 'z';
-    returnVal = iswalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalpha_l(paraVal, g_auwcaLocale);
     LOGD("    iswalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswalpha_l returnVal:='" << returnVal << "'";
 }
@@ -276,7 +283,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalphaL1600, Function | MediumTest | Le
     int returnVal;
 
     paraVal = 'Z';
-    returnVal = iswalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalpha_l(paraVal, g_auwcaLocale);
     LOGD("    iswalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswalpha_l returnVal:='" << returnVal << "'";
 }
@@ -291,7 +298,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalphaL1700, Function | MediumTest | Le
     int returnVal;
 
     paraVal = ' ';
-    returnVal = iswalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalpha_l(paraVal, g_auwcaLocale);
     LOGD("    iswalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswalpha_l returnVal:='" << returnVal << "'";
 }
@@ -306,7 +313,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswalphaL1800, Function | MediumTest | Le
     int returnVal;
 
     paraVal = '\n';
-    returnVal = iswalpha_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswalpha_l(paraVal, g_auwcaLocale);
     LOGD("    iswalpha_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswalpha_l returnVal:='" << returnVal << "'";
 }
@@ -351,7 +358,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswblankL2100, Function | MediumTest | Le
     int returnVal;
 
     paraVal = ' ';
-    returnVal = iswblank_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswblank_l(paraVal, g_auwcaLocale);
     LOGD("    iswblank_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswblank_l returnVal:='" << returnVal << "'";
 }
@@ -366,7 +373,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswblankL2200, Function | MediumTest | Le
     int returnVal;
 
     paraVal = 'A';
-    returnVal = iswblank_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswblank_l(paraVal, g_auwcaLocale);
     LOGD("    iswblank_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswblank_l returnVal:='" << returnVal << "'";
 }
@@ -411,7 +418,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswcntrlL2500, Function | MediumTest | Le
     int returnVal;
 
     paraVal = '\n';
-    returnVal = iswcntrl_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswcntrl_l(paraVal, g_auwcaLocale);
     LOGD("    iswcntrl_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswcntrl_l returnVal:='" << returnVal << "'";
 }
@@ -426,7 +433,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswcntrlL2600, Function | MediumTest | Le
     int returnVal;
 
     paraVal = 'A';
-    returnVal = iswcntrl_l(paraVal, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswcntrl_l(paraVal, g_auwcaLocale);
     LOGD("    iswcntrl_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswcntrl_l returnVal:='" << returnVal << "'";
 }
@@ -477,7 +484,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswctypeL2900, Function | MediumTest | Le
 
     wideChar = 'A';
     paraDesc = wctype("alnum");
-    returnVal = iswctype_l(wideChar, paraDesc, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswctype_l(wideChar, paraDesc, g_auwcaLocale);
     LOGD("    iswctype_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswctype_l returnVal:='" << returnVal << "'";
 }
@@ -494,7 +501,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswctypeL3000, Function | MediumTest | Le
 
     wideChar = '3';
     paraDesc = wctype("alnum");
-    returnVal = iswctype_l(wideChar, paraDesc, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswctype_l(wideChar, paraDesc, g_auwcaLocale);
     LOGD("    iswctype_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswctype_l returnVal:='" << returnVal << "'";
 }
@@ -539,7 +546,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswdigitL3300, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '3';
-    returnVal = iswdigit_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswdigit_l(wideChar, g_auwcaLocale);
     LOGD("    iswdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswdigit_l returnVal:='" << returnVal << "'";
 }
@@ -554,7 +561,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswdigitL3400, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'A';
-    returnVal = iswdigit_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswdigit_l(wideChar, g_auwcaLocale);
     LOGD("    iswdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswdigit_l returnVal:='" << returnVal << "'";
 }
@@ -599,7 +606,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswgraphL3700, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'A';
-    returnVal = iswgraph_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswgraph_l(wideChar, g_auwcaLocale);
     LOGD("    iswgraph_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswgraph_l returnVal:='" << returnVal << "'";
 }
@@ -614,7 +621,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswgraphL3800, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\n';
-    returnVal = iswgraph_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswgraph_l(wideChar, g_auwcaLocale);
     LOGD("    iswgraph_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswgraph_l returnVal:='" << returnVal << "'";
 }
@@ -674,7 +681,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswlowerL4200, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'A';
-    returnVal = iswlower_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswlower_l(wideChar, g_auwcaLocale);
     LOGD("    iswlower_l c:='%c',   returnVal:='%c'\n", wideChar, returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswlower_l c:='" << wideChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -689,7 +696,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswlowerL4300, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'a';
-    returnVal = iswlower_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswlower_l(wideChar, g_auwcaLocale);
     LOGD("    iswlower_l c:='%c',   returnVal:='%c'\n", wideChar, returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswlower_l c:='" << wideChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -704,7 +711,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswlowerL4400, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '5';
-    returnVal = iswlower_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswlower_l(wideChar, g_auwcaLocale);
     LOGD("    iswlower_l c:='%c',   returnVal:='%c'\n", wideChar, returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswlower_l c:='" << wideChar << "',   returnVal:='" << returnVal << "'";
 }
@@ -749,7 +756,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswprintL4700, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'a';
-    returnVal = iswprint_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswprint_l(wideChar, g_auwcaLocale);
     LOGD("    iswprint_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswprint_l  returnVal:='" << returnVal << "'";
 }
@@ -764,7 +771,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswprintL4800, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\n';
-    returnVal = iswprint_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswprint_l(wideChar, g_auwcaLocale);
     LOGD("    iswprint_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswprint_l  returnVal:='" << returnVal << "'";
 }
@@ -839,7 +846,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswpunctL5300, Function | MediumTest | Le
     int returnVal;
 
     wideChar = ' ';
-    returnVal = iswpunct_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswpunct_l(wideChar, g_auwcaLocale);
     LOGD("    iswpunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswpunct_l  returnVal:='" << returnVal << "'";
 }
@@ -854,7 +861,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswpunctL5400, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'A';
-    returnVal = iswpunct_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswpunct_l(wideChar, g_auwcaLocale);
     LOGD("    iswpunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswpunct_l  returnVal:='" << returnVal << "'";
 }
@@ -869,7 +876,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswpunctL5500, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '3';
-    returnVal = iswpunct_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswpunct_l(wideChar, g_auwcaLocale);
     LOGD("    iswpunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswpunct_l  returnVal:='" << returnVal << "'";
 }
@@ -884,7 +891,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswpunctL5600, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\n';
-    returnVal = iswpunct_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswpunct_l(wideChar, g_auwcaLocale);
     LOGD("    iswpunct_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswpunct_l  returnVal:='" << returnVal << "'";
 }
@@ -1004,7 +1011,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL6400, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'a';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1019,7 +1026,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL6500, Function | MediumTest | Le
     int returnVal;
 
     wideChar = ' ';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1034,7 +1041,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL6600, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\n';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1049,7 +1056,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL6700, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\r';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1064,7 +1071,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL6800, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\f';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1079,7 +1086,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL6900, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\t';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1094,7 +1101,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswspaceL7000, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\v';
-    returnVal = iswspace_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswspace_l(wideChar, g_auwcaLocale);
     LOGD("    iswspace_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswspace_l  returnVal:='" << returnVal << "'";
 }
@@ -1169,7 +1176,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswupperL7500, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'A';
-    returnVal = iswupper_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswupper_l(wideChar, g_auwcaLocale);
     LOGD("    iswupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1184,7 +1191,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswupperL7600, Function | MediumTest | Le
     int returnVal;
 
     wideChar = 'a';
-    returnVal = iswupper_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswupper_l(wideChar, g_auwcaLocale);
     LOGD("    iswupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1199,7 +1206,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswupperL7700, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '5';
-    returnVal = iswupper_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswupper_l(wideChar, g_auwcaLocale);
     LOGD("    iswupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1214,7 +1221,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswupperL7800, Function | MediumTest | Le
     int returnVal;
 
     wideChar = '\n';
-    returnVal = iswupper_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswupper_l(wideChar, g_auwcaLocale);
     LOGD("    iswupper_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswupper_l  returnVal:='" << returnVal << "'";
 }
@@ -1259,7 +1266,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswxdigitL8100, Function | MediumTest | L
     int returnVal;
 
     wideChar = 'F';
-    returnVal = iswxdigit_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswxdigit_l(wideChar, g_auwcaLocale);
     LOGD("    iswxdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(returnVal != 0) << "ErrInfo: iswxdigit_l  returnVal:='" << returnVal << "'";
 }
@@ -1274,7 +1281,7 @@ HWTEST_F(ActsUtilWideCheckApiTest, testIswxdigitL8200, Function | MediumTest | L
     int returnVal;
 
     wideChar = 'G';
-    returnVal = iswxdigit_l(wideChar, newlocale(LC_ALL_MASK, "", (locale_t)0));
+    returnVal = iswxdigit_l(wideChar, g_auwcaLocale);
     LOGD("    iswxdigit_l returnVal:='%d'\n", returnVal);
     ASSERT_TRUE(0 == returnVal) << "ErrInfo: iswxdigit_l  returnVal:='" << returnVal << "'";
 }
\ No newline at end of file