diff --git a/frameworks/js/napi/inner/napi_common/BUILD.gn b/frameworks/js/napi/inner/napi_common/BUILD.gn
index f1975653555ee860867cdae640ab7f8b76481fcb..eab4e35d7b8df8a43309cb4941a47dd01b25135e 100644
--- a/frameworks/js/napi/inner/napi_common/BUILD.gn
+++ b/frameworks/js/napi/inner/napi_common/BUILD.gn
@@ -58,6 +58,7 @@ ohos_shared_library("napi_common") {
     "common_event_service:cesfwk_innerkits",
     "eventhandler:libeventhandler",
     "hilog:libhilog",
+    "i18n:intl_napi",
     "ipc:ipc_core",
     "ipc:ipc_napi",
     "json:nlohmann_json_static",
diff --git a/frameworks/js/napi/inner/napi_common/napi_common_util.cpp b/frameworks/js/napi/inner/napi_common/napi_common_util.cpp
index 7629889f4ee9bc65f7fa79b997547a97b5c69e0e..7815b5b7bec825b84b8d7e0dedf87e75b67034d3 100644
--- a/frameworks/js/napi/inner/napi_common/napi_common_util.cpp
+++ b/frameworks/js/napi/inner/napi_common/napi_common_util.cpp
@@ -17,6 +17,7 @@
 #include <cstring>
 
 #include "hilog_tag_wrapper.h"
+#include "intl_locale_addon.h"
 #include "napi_common_data.h"
 #include "napi_common_error.h"
 #include "securec.h"
@@ -1255,42 +1256,7 @@ std::vector<std::string> ConvertStringVector(napi_env env, napi_value jsValue)
 
 napi_value WrapLocaleToJS(napi_env env, const std::string &locale)
 {
-    napi_value global = nullptr;
-    napi_status status = napi_get_global(env, &global);
-    if (status != napi_ok || global == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Load global failed");
-        return nullptr;
-    }
-
-    napi_value intl = nullptr;
-    status = napi_get_named_property(env, global, "Intl", &intl);
-    if (status != napi_ok || intl == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Load Intl failed");
-        return nullptr;
-    }
-
-    napi_value localeConstructor = nullptr;
-    status = napi_get_named_property(env, intl, "Locale", &localeConstructor);
-    if (status != napi_ok || localeConstructor == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Load Intl.Locale constructor failed");
-        return nullptr;
-    }
-
-    napi_value localeJS = WrapStringToJS(env, locale);
-    if (localeJS == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Wrap locale failed");
-        return nullptr;
-    }
-
-    size_t argc = 1;
-    napi_value argv[1] = { localeJS };
-    napi_value intlLocale = nullptr;
-    status = napi_new_instance(env, localeConstructor, argc, argv, &intlLocale);
-    if (status != napi_ok || intlLocale == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Create Intl.Locale instance failed");
-        return nullptr;
-    }
-    return intlLocale;
+    return OHOS::Global::I18n::IntlLocaleAddon::WrapLocaleToJS(env, locale);
 }
 
 bool UnwrapLocaleByPropertyName(napi_env env, napi_value jsObject, const char *propertyName, std::string &value)
@@ -1299,26 +1265,7 @@ bool UnwrapLocaleByPropertyName(napi_env env, napi_value jsObject, const char *p
     if (jsValue == nullptr) {
         return false;
     }
-    return UnwrapLocaleFromJS(env, jsValue, value);
-}
-
-bool UnwrapLocaleFromJS(napi_env env, napi_value jsValue, std::string &value)
-{
-    napi_value func = nullptr;
-    napi_status status = napi_get_named_property(env, jsValue, "toString", &func);
-    if (status != napi_ok || func == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Get function toString failed");
-        return false;
-    }
-
-    napi_value locale = nullptr;
-    status = napi_call_function(env, jsValue, func, 0, nullptr, &locale);
-    if (status != napi_ok || locale == nullptr) {
-        TAG_LOGE(AAFwkTag::JSNAPI, "Call function toString failed");
-        return false;
-    }
-
-    return UnwrapStringFromJS2(env, locale, value);
+    return OHOS::Global::I18n::IntlLocaleAddon::UnwrapLocaleFromJS(env, jsValue, value);
 }
 }  // namespace AppExecFwk
 }  // namespace OHOS
diff --git a/frameworks/js/napi/inner/napi_common/napi_common_util.h b/frameworks/js/napi/inner/napi_common/napi_common_util.h
index 40210b1de30c333d0e82e6f6f4cdbc9139789d41..45a6b88b879f2f495876591e44bda19d8fdd9357 100644
--- a/frameworks/js/napi/inner/napi_common/napi_common_util.h
+++ b/frameworks/js/napi/inner/napi_common/napi_common_util.h
@@ -271,8 +271,6 @@ std::vector<std::string> ConvertStringVector(napi_env env, napi_value jsValue);
 napi_value WrapLocaleToJS(napi_env env, const std::string &locale);
 
 bool UnwrapLocaleByPropertyName(napi_env env, napi_value jsObject, const char *propertyName, std::string &value);
-
-bool UnwrapLocaleFromJS(napi_env env, napi_value jsValue, std::string &value);
 }  // namespace AppExecFwk
 }  // namespace OHOS
 #endif  // OHOS_ABILITY_RUNTIME_NAPI_COMMON_UTIL_H
diff --git a/frameworks/native/ability/native/application_configuration_manager.cpp b/frameworks/native/ability/native/application_configuration_manager.cpp
index c781ca15c371fe52c35925aaa812a744ce7dc362..bb7672c53d4ea15a4ba8d061c2c6b98bbc30d20d 100644
--- a/frameworks/native/ability/native/application_configuration_manager.cpp
+++ b/frameworks/native/ability/native/application_configuration_manager.cpp
@@ -20,7 +20,6 @@
 #include <vector>
 #include "application_configuration_manager.h"
 #include "configuration_utils.h"
-#include "unicode/locid.h"
 
 namespace OHOS {
 namespace AbilityRuntime {
@@ -128,47 +127,5 @@ std::vector<std::shared_ptr<Global::Resource::ResourceManager>> ApplicationConfi
         });
     return values;
 }
-
-std::string ApplicationConfigurationManager::GetUpdatedLocale(const std::string& systemLocale,
-    const std::string& systemLanguage)
-{
-    if (systemLocale.empty() || systemLanguage.empty()) {
-        return "";
-    }
-
-    UErrorCode status = U_ZERO_ERROR;
-    icu::Locale locale = icu::Locale::forLanguageTag(systemLocale.c_str(), status);
-    if (U_FAILURE(status)) {
-        return "";
-    }
-
-    icu::Locale language = icu::Locale::forLanguageTag(systemLanguage.c_str(), status);
-    if (U_FAILURE(status)) {
-        return "";
-    }
-
-    std::string extendParamTag;
-    size_t pos = systemLocale.find("-u-");
-    if (pos != std::string::npos) {
-        extendParamTag = systemLocale.substr(pos);
-    }
-
-    std::string languageTag = language.getLanguage();
-    std::string scriptTag = language.getScript();
-    std::string regionTag = locale.getCountry();
-
-    std::string effectiveLocale = languageTag;
-    std::string splitor = "-";
-    if (!scriptTag.empty()) {
-        effectiveLocale += splitor + scriptTag;
-    }
-    if (!regionTag.empty()) {
-        effectiveLocale += splitor + regionTag;
-    }
-    if (!extendParamTag.empty()) {
-        effectiveLocale += extendParamTag;
-    }
-    return effectiveLocale;
-}
 } // namespace AbilityRuntime
 } // namespace OHOS
\ No newline at end of file
diff --git a/frameworks/native/appkit/app/main_thread.cpp b/frameworks/native/appkit/app/main_thread.cpp
index 6f4c1ae42aee99b63a746e716731c4e7c7a8ece8..a1180eeec63081f40f3ba16ba1ad1349cdd10c5d 100644
--- a/frameworks/native/appkit/app/main_thread.cpp
+++ b/frameworks/native/appkit/app/main_thread.cpp
@@ -1765,7 +1765,7 @@ void MainThread::HandleLaunchApplication(const AppLaunchData &appLaunchData, con
         appConfig.AddItem(AAFwk::GlobalConfigurationKey::SYSTEM_LANGUAGE, preferredLanguage);
         std::string locale = appConfig.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE);
         appConfig.AddItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE,
-            AbilityRuntime::ApplicationConfigurationManager::GetUpdatedLocale(locale, preferredLanguage));
+            Global::I18n::LocaleConfig::ComputeUpdatedLocale(locale, preferredLanguage));
     }
     HandleConfigByPlugin(appConfig, bundleInfo);
     std::string systemSizeScale = appConfig.GetItem(AAFwk::GlobalConfigurationKey::APP_FONT_SIZE_SCALE);
diff --git a/frameworks/native/appkit/app/ohos_application.cpp b/frameworks/native/appkit/app/ohos_application.cpp
index 45831ff8001811c05b876e26fa10344ea10802b4..9e70f48b41bfe9aa943bcb835c9f318dfc55ee41 100644
--- a/frameworks/native/appkit/app/ohos_application.cpp
+++ b/frameworks/native/appkit/app/ohos_application.cpp
@@ -35,6 +35,7 @@
 #include "hilog_tag_wrapper.h"
 #include "hitrace_meter.h"
 #include "iservice_registry.h"
+#include "locale_config.h"
 #include "runtime.h"
 #include "js_runtime.h"
 #include "startup_manager.h"
@@ -1020,25 +1021,21 @@ bool OHOSApplication::IsUpdateLanguageNeeded(Configuration &config, AbilityRunti
     return true;
 }
 
-bool OHOSApplication::IsUpdateLocaleNeeded(const Configuration& updatedConfig, Configuration &config)
+bool OHOSApplication::IsUpdateLocaleNeeded(const Configuration& config, Configuration &updatedConfig)
 {
-    std::string language = config.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LANGUAGE);
-    std::string locale = config.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE);
-    if (language.empty() && locale.empty()) {
+    std::string updatedLanguage = updatedConfig.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LANGUAGE);
+    std::string updatedLocale = updatedConfig.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE);
+    if (updatedLocale.empty() && updatedLocale.empty()) {
         TAG_LOGW(AAFwkTag::APPKIT, "language and locale empty");
         return false;
     }
-    std::string updatedLocale;
-    if (!language.empty() && !locale.empty()) {
-        updatedLocale = ApplicationConfigurationManager::GetUpdatedLocale(locale, language);
-    } else if (!language.empty()) {
-        updatedLocale = ApplicationConfigurationManager::GetUpdatedLocale(
-            updatedConfig.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE), language);
-    } else {
-        updatedLocale = ApplicationConfigurationManager::GetUpdatedLocale(locale,
-            updatedConfig.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LANGUAGE));
+    std::string systemLanguage = config.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LANGUAGE);
+    std::string systemLocale = config.GetItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE);
+    std::string modifiedLocale = OHOS::Global::I18n::LocaleConfig::GetUpdatedLocale(systemLocale, systemLanguage,
+        updatedLocale, updatedLanguage);
+    if (!modifiedLocale.empty()) {
+        updatedConfig.AddItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE, modifiedLocale);
     }
-    config.AddItem(AAFwk::GlobalConfigurationKey::SYSTEM_LOCALE, updatedLocale);
     return true;
 }
 
diff --git a/frameworks/native/runtime/js_data_struct_converter.cpp b/frameworks/native/runtime/js_data_struct_converter.cpp
index 4b15f0300e4b04fb6292f0e5f428dd19b2de9abd..8ca6f0c2dd971ee1389c6209630eb2779849a378 100644
--- a/frameworks/native/runtime/js_data_struct_converter.cpp
+++ b/frameworks/native/runtime/js_data_struct_converter.cpp
@@ -17,6 +17,7 @@
 
 #include "common_func.h"
 #include "configuration_convertor.h"
+#include "data_converter.h"
 #include "hilog_tag_wrapper.h"
 #include "js_app_process_state.h"
 #include "js_runtime.h"
@@ -186,43 +187,7 @@ napi_value CreateJsHapModuleInfo(napi_env env, const AppExecFwk::HapModuleInfo&
 
 napi_value CreateJsLocale(napi_env env, const std::string &locale)
 {
-    napi_value global = nullptr;
-    napi_status status = napi_get_global(env, &global);
-    if (status != napi_ok || global == nullptr) {
-        TAG_LOGE(AAFwkTag::JSRUNTIME, "Load global failed");
-        return nullptr;
-    }
-
-    napi_value intl = nullptr;
-    status = napi_get_named_property(env, global, "Intl", &intl);
-    if (status != napi_ok || intl == nullptr) {
-        TAG_LOGE(AAFwkTag::JSRUNTIME, "Load Intl failed");
-        return nullptr;
-    }
-
-    napi_value localeConstructor = nullptr;
-    status = napi_get_named_property(env, intl, "Locale", &localeConstructor);
-    if (status != napi_ok || localeConstructor == nullptr) {
-        TAG_LOGE(AAFwkTag::JSRUNTIME, "Load Intl.Locale constructor failed");
-        return nullptr;
-    }
-
-    napi_value localeJS = nullptr;
-    status = napi_create_string_utf8(env, locale.c_str(), NAPI_AUTO_LENGTH, &localeJS);
-    if (status != napi_ok || localeJS == nullptr) {
-        TAG_LOGE(AAFwkTag::JSRUNTIME, "Create string failed");
-        return nullptr;
-    }
-
-    size_t argc = 1;
-    napi_value argv[1] = { localeJS };
-    napi_value intlLocale = nullptr;
-    status = napi_new_instance(env, localeConstructor, argc, argv, &intlLocale);
-    if (status != napi_ok || intlLocale == nullptr) {
-        TAG_LOGE(AAFwkTag::JSRUNTIME, "Create Intl.Locale instance failed");
-        return nullptr;
-    }
-    return intlLocale;
+    return OHOS::Global::I18n::DataConverter::CreateIntlLocale(env, locale);
 }
 } // namespace AbilityRuntime
 } // namespace OHOS
diff --git a/interfaces/kits/native/ability/native/application_configuration_manager.h b/interfaces/kits/native/ability/native/application_configuration_manager.h
index 86b19dd63195f2601a473d87e28483b9c78b29c3..1bf64171c933a1a3145a7b27e63ae7918a06419d 100644
--- a/interfaces/kits/native/ability/native/application_configuration_manager.h
+++ b/interfaces/kits/native/ability/native/application_configuration_manager.h
@@ -52,7 +52,6 @@ public:
     void DeleteIgnoreContext(std::shared_ptr<Context> context);
     std::vector<std::shared_ptr<Context>> GetIgnoreContext();
     std::vector<std::shared_ptr<Global::Resource::ResourceManager>> GetIgnoreResource();
-    static std::string GetUpdatedLocale(const std::string& systemLocale, const std::string& systemLanguage);
 
 private:
     SetLevel languageSetLevel_ = SetLevel::System;
diff --git a/test/unittest/ability_service_extension_test/BUILD.gn b/test/unittest/ability_service_extension_test/BUILD.gn
index 18412fa0cfbbd13cf9f38392f04e57a8976d90ee..231934867558708e2eeae6c6fd427746298ce2c9 100644
--- a/test/unittest/ability_service_extension_test/BUILD.gn
+++ b/test/unittest/ability_service_extension_test/BUILD.gn
@@ -70,6 +70,7 @@ ohos_unittest("ability_service_extension_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "ipc:ipc_napi",
diff --git a/test/unittest/app_service_extension_test/BUILD.gn b/test/unittest/app_service_extension_test/BUILD.gn
index 24a5b62347dfc6f5a35eedcdcbf691dbbc19c9ae..60f966570401e744769e7737859f70f25d06bfef 100644
--- a/test/unittest/app_service_extension_test/BUILD.gn
+++ b/test/unittest/app_service_extension_test/BUILD.gn
@@ -70,6 +70,7 @@ ohos_unittest("app_service_extension_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "ipc:ipc_napi",
diff --git a/test/unittest/cj_ability_stage_object_test/BUILD.gn b/test/unittest/cj_ability_stage_object_test/BUILD.gn
index d81634e4c72c30a6f53c1387a79f1df9a93d84d3..08a34a8c31f929b3b43c04eabba0749d9ffb617d 100644
--- a/test/unittest/cj_ability_stage_object_test/BUILD.gn
+++ b/test/unittest/cj_ability_stage_object_test/BUILD.gn
@@ -80,6 +80,7 @@ ohos_unittest("cj_ability_stage_object_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
diff --git a/test/unittest/cj_ability_stage_test/BUILD.gn b/test/unittest/cj_ability_stage_test/BUILD.gn
index b3fdcf676e730c8a23bf8341685c2b88466ab208..8f9e1586f3dc2cb0d024f5dba38d6a2faf01284e 100644
--- a/test/unittest/cj_ability_stage_test/BUILD.gn
+++ b/test/unittest/cj_ability_stage_test/BUILD.gn
@@ -85,6 +85,7 @@ ohos_unittest("cj_ability_stage_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
diff --git a/test/unittest/cj_ui_ability_test/BUILD.gn b/test/unittest/cj_ui_ability_test/BUILD.gn
index 397054358bd89696d87f7f646514a0a102d1b5db..0aea3979f46cc9074ff93ee0f07143ad3dc19d79 100644
--- a/test/unittest/cj_ui_ability_test/BUILD.gn
+++ b/test/unittest/cj_ui_ability_test/BUILD.gn
@@ -86,6 +86,7 @@ ohos_unittest("cj_ui_ability_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
diff --git a/test/unittest/frameworks_kits_appkit_native_test/BUILD.gn b/test/unittest/frameworks_kits_appkit_native_test/BUILD.gn
index 0baadfbaedab2dd43ad33c44b0ace15b45890149..0308ed3a4ecf4a6e551c0550d437065e75d9a287 100644
--- a/test/unittest/frameworks_kits_appkit_native_test/BUILD.gn
+++ b/test/unittest/frameworks_kits_appkit_native_test/BUILD.gn
@@ -136,6 +136,7 @@ ohos_unittest("application_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
@@ -201,6 +202,7 @@ ohos_unittest("context_impl_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
@@ -260,6 +262,7 @@ ohos_unittest("context_impl_second_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
@@ -319,6 +322,7 @@ ohos_unittest("context_impl_third_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
@@ -371,6 +375,7 @@ ohos_unittest("context_container_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
@@ -569,6 +574,7 @@ ohos_unittest("context_deal_test") {
     "form_fwk:form_manager",
     "googletest:gmock_main",
     "googletest:gtest_main",
+    "i18n:intl_util",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
     "init:libbegetutil",
@@ -627,6 +633,7 @@ ohos_unittest("application_impl_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",
@@ -772,6 +779,7 @@ ohos_unittest("form_extension_context_test") {
     "googletest:gtest_main",
     "hilog:libhilog",
     "hitrace:hitrace_meter",
+    "i18n:intl_util",
     "init:libbegetutil",
     "ipc:ipc_core",
     "napi:ace_napi",