diff --git a/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugCommentNoticeService.java b/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugCommentNoticeService.java
index 702a83deb9..237cb27090 100644
--- a/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugCommentNoticeService.java
+++ b/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugCommentNoticeService.java
@@ -81,9 +81,9 @@ public class BugCommentNoticeService {
 
     private static void setLanguage(String language) {
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US",language)) {
+        if (StringUtils.containsIgnoreCase(language, "US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW",language)){
+        } else if (StringUtils.containsIgnoreCase(language, "TW")){
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
diff --git a/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugSyncNoticeService.java b/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugSyncNoticeService.java
index 8cfb904bf7..98555cdba2 100644
--- a/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugSyncNoticeService.java
+++ b/backend/services/bug-management/src/main/java/io/metersphere/bug/service/BugSyncNoticeService.java
@@ -89,9 +89,9 @@ public class BugSyncNoticeService {
 
     private static void setLanguage(String language) {
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US",language)) {
+        if (StringUtils.containsIgnoreCase(language, "US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW",language)){
+        } else if (StringUtils.containsIgnoreCase(language, "TW")){
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
diff --git a/backend/services/case-management/src/main/java/io/metersphere/functional/service/FunctionalCaseCommentService.java b/backend/services/case-management/src/main/java/io/metersphere/functional/service/FunctionalCaseCommentService.java
index 8fb25c4f87..af9dd09feb 100644
--- a/backend/services/case-management/src/main/java/io/metersphere/functional/service/FunctionalCaseCommentService.java
+++ b/backend/services/case-management/src/main/java/io/metersphere/functional/service/FunctionalCaseCommentService.java
@@ -193,9 +193,9 @@ public class FunctionalCaseCommentService {
 
     private static void setLanguage(String language) {
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US",language)) {
+        if (StringUtils.containsIgnoreCase(language, "US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW",language)){
+        } else if (StringUtils.containsIgnoreCase(language, "TW")){
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
diff --git a/backend/services/case-management/src/main/java/io/metersphere/functional/service/ReviewSendNoticeService.java b/backend/services/case-management/src/main/java/io/metersphere/functional/service/ReviewSendNoticeService.java
index f3bc49f9ca..03b23ccfad 100644
--- a/backend/services/case-management/src/main/java/io/metersphere/functional/service/ReviewSendNoticeService.java
+++ b/backend/services/case-management/src/main/java/io/metersphere/functional/service/ReviewSendNoticeService.java
@@ -89,9 +89,9 @@ public class ReviewSendNoticeService {
 
     private static void setLanguage(String language) {
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US",language)) {
+        if (StringUtils.containsIgnoreCase(language, "US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW",language)){
+        } else if (StringUtils.containsIgnoreCase(language, "TW")){
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
diff --git a/backend/services/system-setting/src/main/java/io/metersphere/system/service/CommonNoticeSendService.java b/backend/services/system-setting/src/main/java/io/metersphere/system/service/CommonNoticeSendService.java
index 24ba78251a..011a698c3c 100644
--- a/backend/services/system-setting/src/main/java/io/metersphere/system/service/CommonNoticeSendService.java
+++ b/backend/services/system-setting/src/main/java/io/metersphere/system/service/CommonNoticeSendService.java
@@ -116,9 +116,9 @@ public class CommonNoticeSendService {
 
     private static void setLanguage(String language) {
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US", language)) {
+        if (StringUtils.containsIgnoreCase(language, "US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW", language)) {
+        } else if (StringUtils.containsIgnoreCase(language, "TW")) {
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
diff --git a/backend/services/system-setting/src/main/java/io/metersphere/system/service/NoticeSendService.java b/backend/services/system-setting/src/main/java/io/metersphere/system/service/NoticeSendService.java
index acac9b73d5..06f712a0c5 100644
--- a/backend/services/system-setting/src/main/java/io/metersphere/system/service/NoticeSendService.java
+++ b/backend/services/system-setting/src/main/java/io/metersphere/system/service/NoticeSendService.java
@@ -92,9 +92,9 @@ public class NoticeSendService {
     private static void setLanguage(NoticeModel noticeModel) {
         String language = (String) noticeModel.getParamMap().get("Language");
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US",language)) {
+        if (StringUtils.containsIgnoreCase(language,"US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW",language)){
+        } else if (StringUtils.containsIgnoreCase(language,"TW")){
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
@@ -102,9 +102,9 @@ public class NoticeSendService {
 
     public void setLanguage(String language) {
         Locale locale = Locale.SIMPLIFIED_CHINESE;
-        if (StringUtils.containsIgnoreCase("US",language)) {
+        if (StringUtils.containsIgnoreCase(language,"US")) {
             locale = Locale.US;
-        } else if (StringUtils.containsIgnoreCase("TW",language)){
+        } else if (StringUtils.containsIgnoreCase(language,"TW")){
             locale = Locale.TAIWAN;
         }
         LocaleContextHolder.setLocale(locale);
diff --git a/backend/services/test-plan/src/main/java/io/metersphere/plan/service/TestPlanSendNoticeService.java b/backend/services/test-plan/src/main/java/io/metersphere/plan/service/TestPlanSendNoticeService.java
index f99c2971f3..b3a80a2a6d 100644
--- a/backend/services/test-plan/src/main/java/io/metersphere/plan/service/TestPlanSendNoticeService.java
+++ b/backend/services/test-plan/src/main/java/io/metersphere/plan/service/TestPlanSendNoticeService.java
@@ -98,9 +98,9 @@ public class TestPlanSendNoticeService {
 
 	private static void setLanguage(String language) {
 		Locale locale = Locale.SIMPLIFIED_CHINESE;
-		if (StringUtils.containsIgnoreCase("US", language)) {
+		if (StringUtils.containsIgnoreCase(language, "US")) {
 			locale = Locale.US;
-		} else if (StringUtils.containsIgnoreCase("TW", language)) {
+		} else if (StringUtils.containsIgnoreCase(language, "TW")) {
 			locale = Locale.TAIWAN;
 		}
 		LocaleContextHolder.setLocale(locale);