diff --git a/LTEMvcApp/Controllers/MessageController.cs b/LTEMvcApp/Controllers/MessageController.cs
index 7bb1e2e..a1cdb15 100644
--- a/LTEMvcApp/Controllers/MessageController.cs
+++ b/LTEMvcApp/Controllers/MessageController.cs
@@ -32,6 +32,18 @@ namespace LTEMvcApp.Controllers
             }
         }
 
+        /// <summary>
+        /// 工具方法：将address转换为合法文件名
+        /// </summary>
+        private static string SanitizeFileName(string address)
+        {
+            foreach (var c in System.IO.Path.GetInvalidFileNameChars())
+            {
+                address = address.Replace(c, '_');
+            }
+            return address;
+        }
+
         /// <summary>
         /// SSE推送客户端消息流
         /// </summary>
@@ -63,8 +75,10 @@ namespace LTEMvcApp.Controllers
                 int lastReceivedCount = 0;
                 var cancellationToken = HttpContext.RequestAborted;
 
-                var sentLogFilePath = Path.Combine(_logsDirectory, $"{address}_sent_messages.log");
-                var receivedLogFilePath = Path.Combine(_logsDirectory, $"{address}_received_messages.log");
+                // 使用安全文件名
+                var safeAddress = SanitizeFileName(address);
+                var sentLogFilePath = Path.Combine(_logsDirectory, $"{safeAddress}_sent_messages.log");
+                var receivedLogFilePath = Path.Combine(_logsDirectory, $"{safeAddress}_received_messages.log");
 
                 while (!cancellationToken.IsCancellationRequested)
                 {