diff --git a/src/Application/Masa.Alert.Application/AlarmHistories/Queries/AlarmHistoryQueryHandler.cs b/src/Application/Masa.Alert.Application/AlarmHistories/Queries/AlarmHistoryQueryHandler.cs
index 6c820d77..874c38b6 100644
--- a/src/Application/Masa.Alert.Application/AlarmHistories/Queries/AlarmHistoryQueryHandler.cs
+++ b/src/Application/Masa.Alert.Application/AlarmHistories/Queries/AlarmHistoryQueryHandler.cs
@@ -1,4 +1,4 @@
-// Copyright (c) MASA Stack All rights reserved.
+// Copyright (c) MASA Stack All rights reserved.
 // Licensed under the Apache License. See LICENSE.txt in the project root for license information.
 
 namespace Masa.Alert.Application.AlarmHistories.Queries;
@@ -55,7 +55,7 @@ public async Task GetListAsync(GetAlarmHistoryListQuery query)
     private async Task<Expression<Func<AlarmHistoryQueryModel, bool>>> CreateFilteredPredicate(GetAlarmHistoryInputDto options)
     {
         Expression<Func<AlarmHistoryQueryModel, bool>> condition = x => true;
-        condition = condition.And(!string.IsNullOrEmpty(options.Filter), x => x.AlarmRule.DisplayName.Contains(options.Filter));
+        condition = condition.And(!string.IsNullOrEmpty(options.Filter), x => x.AlarmRule.DisplayName.ToLower().Contains(options.Filter.ToLower()));
         switch (options.SearchType)
         {
             case AlarmHistorySearchTypes.Alarming:
diff --git a/src/Application/Masa.Alert.Application/AlarmRules/Queries/AlarmRuleQueryHandler.cs b/src/Application/Masa.Alert.Application/AlarmRules/Queries/AlarmRuleQueryHandler.cs
index 5e51d6cd..640ef32e 100644
--- a/src/Application/Masa.Alert.Application/AlarmRules/Queries/AlarmRuleQueryHandler.cs
+++ b/src/Application/Masa.Alert.Application/AlarmRules/Queries/AlarmRuleQueryHandler.cs
@@ -1,4 +1,4 @@
-// Copyright (c) MASA Stack All rights reserved.
+// Copyright (c) MASA Stack All rights reserved.
 // Licensed under the Apache License. See LICENSE.txt in the project root for license information.
 
 namespace Masa.Alert.Application.AlarmRules.Queries;
@@ -54,7 +54,7 @@ public async Task GetListAsync(GetAlarmRuleListQuery query)
     private async Task<Expression<Func<AlarmRuleQueryModel, bool>>> CreateFilteredPredicate(GetAlarmRuleInputDto options)
     {
         Expression<Func<AlarmRuleQueryModel, bool>> condition = x => true;
-        condition = condition.And(!string.IsNullOrEmpty(options.Filter), x => x.DisplayName.Contains(options.Filter));
+        condition = condition.And(!string.IsNullOrEmpty(options.Filter), x => x.DisplayName.ToLower().Contains(options.Filter.ToLower()));
         condition = condition.And(options.Type != default, x => x.Type == options.Type);
         condition = condition.And(x => x.Show == options.Show);
         if (options.TimeType == AlarmRuleSearchTimeTypes.ModificationTime)
diff --git a/src/Application/Masa.Alert.Application/WebHooks/Queries/WebHookQueryHandler.cs b/src/Application/Masa.Alert.Application/WebHooks/Queries/WebHookQueryHandler.cs
index 924ac93c..10a818a2 100644
--- a/src/Application/Masa.Alert.Application/WebHooks/Queries/WebHookQueryHandler.cs
+++ b/src/Application/Masa.Alert.Application/WebHooks/Queries/WebHookQueryHandler.cs
@@ -1,4 +1,4 @@
-// Copyright (c) MASA Stack All rights reserved.
+// Copyright (c) MASA Stack All rights reserved.
 // Licensed under the Apache License. See LICENSE.txt in the project root for license information.
 
 namespace Masa.Alert.Application.WebHooks.Queries;
@@ -48,7 +48,7 @@ public async Task GetListAsync(GetWebHookListQuery query)
     private async Task<Expression<Func<WebHookQueryModel, bool>>> CreateFilteredPredicate(GetWebHookInputDto options)
     {
         Expression<Func<WebHookQueryModel, bool>> condition = x => true;
-        condition = condition.And(!string.IsNullOrEmpty(options.Filter), x => x.DisplayName.Contains(options.Filter));
+        condition = condition.And(!string.IsNullOrEmpty(options.Filter), x => x.DisplayName.ToLower().Contains(options.Filter.ToLower()));
         return await Task.FromResult(condition); ;
     }