diff --git a/v2rayN/ServiceLib/Common/FileUtils.cs b/v2rayN/ServiceLib/Common/FileUtils.cs
index 2f86b60a..39e6c1f8 100644
--- a/v2rayN/ServiceLib/Common/FileUtils.cs
+++ b/v2rayN/ServiceLib/Common/FileUtils.cs
@@ -202,7 +202,7 @@ public static class FileUtils
         }
     }
 
-    public static void DeleteExpiredFiles(string sourceDir, DateTime dtLine)
+    public static void DeleteExpiredFiles(string sourceDir, DateTime dtLine, string? contains = null)
     {
         try
         {
@@ -214,6 +214,10 @@ public static class FileUtils
                 {
                     continue;
                 }
+                if (contains.IsNotEmpty() && !file.Name.Contains(contains))
+                {
+                    continue;
+                }
                 file.Delete();
             }
         }
diff --git a/v2rayN/ServiceLib/Manager/TaskManager.cs b/v2rayN/ServiceLib/Manager/TaskManager.cs
index 1e5b0c70..47254a06 100644
--- a/v2rayN/ServiceLib/Manager/TaskManager.cs
+++ b/v2rayN/ServiceLib/Manager/TaskManager.cs
@@ -56,7 +56,7 @@ public class TaskManager
             {
                 //Logging.SaveLog("Execute delete expired files");
 
-                FileUtils.DeleteExpiredFiles(Utils.GetBinConfigPath(), DateTime.Now.AddHours(-1));
+                FileUtils.DeleteExpiredFiles(Utils.GetBinConfigPath(), DateTime.Now.AddHours(-1), "Test");
                 FileUtils.DeleteExpiredFiles(Utils.GetLogPath(), DateTime.Now.AddMonths(-1));
                 FileUtils.DeleteExpiredFiles(Utils.GetTempPath(), DateTime.Now.AddMonths(-1));