diff --git a/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/Localization/Resources/en.json b/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/Localization/Resources/en.json
index d4a32c194f..9bb8dd275c 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/Localization/Resources/en.json
+++ b/modules/cms-kit/src/Volo.CmsKit.Domain.Shared/Volo/CmsKit/Localization/Resources/en.json
@@ -214,6 +214,8 @@
     "Feature:TagEnableDescription": "CMS Kit's tag system that allows tagging entities such as BlogPost.",
     "DeleteBlogPostMessage": "The blog will be deleted. Are you sure?",
     "CaptchaCode": "Captcha code",
-    "CommentTextRequired": "Comment is required"
+    "CommentTextRequired": "Comment is required",
+    "CaptchaCodeErrorMessage" : "The answer you entered for the CAPTCHA was not correct. Please try again",
+    "CaptchaCodeMissingMessage": "The captcha code is missing!"
   }
 }
\ No newline at end of file
diff --git a/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/CaptchaException.cs b/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/CaptchaException.cs
deleted file mode 100644
index 7914e85b02..0000000000
--- a/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/CaptchaException.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using System.Runtime.Serialization;
-using Volo.Abp;
-
-namespace Volo.CmsKit.Public.Web.Security.Captcha;
-
-public class CaptchaException : UserFriendlyException
-{
-    public CaptchaException(string message) : base(message)
-    {
-    }
-
-    public CaptchaException(SerializationInfo serializationInfo, StreamingContext context) : base(serializationInfo, context)
-    {
-    }
-}
\ No newline at end of file
diff --git a/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/SimpleMathsCaptchaGenerator.cs b/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/SimpleMathsCaptchaGenerator.cs
index ef5a30a055..220e24f892 100644
--- a/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/SimpleMathsCaptchaGenerator.cs
+++ b/modules/cms-kit/src/Volo.CmsKit.Public.Web/Security/Captcha/SimpleMathsCaptchaGenerator.cs
@@ -9,6 +9,9 @@ using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Drawing.Processing;
 using SixLabors.ImageSharp.PixelFormats;
 using SixLabors.ImageSharp.Processing;
+using Volo.Abp;
+using Volo.CmsKit.Localization;
+using Microsoft.Extensions.Localization;
 using Volo.Abp.DependencyInjection;
 using Color = SixLabors.ImageSharp.Color;
 using PointF = SixLabors.ImageSharp.PointF;
@@ -17,6 +20,12 @@ namespace Volo.CmsKit.Public.Web.Security.Captcha;
 
 public class SimpleMathsCaptchaGenerator : ISingletonDependency
 {
+    private readonly IStringLocalizer<CmsKitResource> _localizer;
+
+    public SimpleMathsCaptchaGenerator(IStringLocalizer<CmsKitResource> localizer)
+    {
+        _localizer = localizer;
+    }
     private static Dictionary<Guid, CaptchaRequest> Session { get; set; } = new Dictionary<Guid, CaptchaRequest>();
 
     public CaptchaOutput Generate()
@@ -74,7 +83,7 @@ public class SimpleMathsCaptchaGenerator : ISingletonDependency
         var request = Session[requestId];
         if (request.Output.Result != value)
         {
-            throw new CaptchaException("The captcha code doesn't match text on the picture! Please try again.");
+            throw new UserFriendlyException(_localizer["CaptchaCodeErrorMessage"]);
         }
     }
 
@@ -86,7 +95,7 @@ public class SimpleMathsCaptchaGenerator : ISingletonDependency
         }
         else
         {
-            throw new CaptchaException("The captcha code is missing!");
+            throw new UserFriendlyException(_localizer["CaptchaCodeMissingMessage"]);
         }
     }