diff --git a/SHH.CameraSdk/Controllers/MonitorController.cs b/SHH.CameraSdk/Controllers/MonitorController.cs
index a14b243..3e6aa59 100644
--- a/SHH.CameraSdk/Controllers/MonitorController.cs
+++ b/SHH.CameraSdk/Controllers/MonitorController.cs
@@ -120,4 +120,31 @@ public class MonitorController : ControllerBase
     }
 
     #endregion
+
+    /// <summary>
+    /// 获取系统操作日志（读取最新的 50 条）
+    /// </summary>
+    [HttpGet("system-logs")]
+    public IActionResult GetSystemLogs()
+    {
+        try
+        {
+            var logPath = "user_actions.log";
+            if (!System.IO.File.Exists(logPath))
+            {
+                return Ok(new List<string> { "暂无操作记录" });
+            }
+
+            // 读取文件 -> 取最后50行 -> 倒序排列(最新在前)
+            var logs = System.IO.File.ReadLines(logPath)
+                                     .TakeLast(50)
+                                     .Reverse()
+                                     .ToList();
+            return Ok(logs);
+        }
+        catch (Exception ex)
+        {
+            return StatusCode(500, $"读取日志失败: {ex.Message}");
+        }
+    }
 }
\ No newline at end of file
diff --git a/SHH.CameraSdk/Program.cs b/SHH.CameraSdk/Program.cs
index c3bd6d1..058ceee 100644
--- a/SHH.CameraSdk/Program.cs
+++ b/SHH.CameraSdk/Program.cs
@@ -91,7 +91,12 @@ public class Program
         builder.Logging.AddFilter("System", LogLevel.Warning);
         builder.Logging.AddFilter("Microsoft.AspNetCore.Hosting.Diagnostics", LogLevel.Warning);
 
-        builder.Services.AddControllers();
+        builder.Services.AddControllers(options =>
+        {
+            // 注册全局操作日志过滤器
+            options.Filters.Add<UserActionFilter>();
+        });
+
         builder.Services.AddEndpointsApiExplorer();
         builder.Services.AddSwaggerGen(c =>
         {
diff --git a/SHH.CameraSdk/Temp/UserActionFilter.cs b/SHH.CameraSdk/Temp/UserActionFilter.cs
index 8d171cd..aa9ef05 100644
--- a/SHH.CameraSdk/Temp/UserActionFilter.cs
+++ b/SHH.CameraSdk/Temp/UserActionFilter.cs
@@ -1,18 +1,35 @@
 using Microsoft.AspNetCore.Mvc.Filters;
 
+namespace SHH.CameraSdk;
+
 public class UserActionFilter : IActionFilter
 {
+    // 静态锁，防止多线程同时写文件报错
+    private static readonly object _logLock = new object();
+
     public void OnActionExecuted(ActionExecutedContext context)
     {
+        // 只记录非 GET 请求（即修改性质的操作）
         if (context.HttpContext.Request.Method != "GET")
         {
-            var user = context.HttpContext.Connection.RemoteIpAddress;
-            var path = context.HttpContext.Request.Path;
-            var method = context.HttpContext.Request.Method;
+            try
+            {
+                var user = context.HttpContext.Connection.RemoteIpAddress?.ToString() ?? "Unknown";
+                var path = context.HttpContext.Request.Path;
+                var method = context.HttpContext.Request.Method;
+                var time = DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss");
 
-            // 写入全局操作日志文件或数据库
-            File.AppendAllText("user_actions.log", $"{DateTime.Now} | {user} | {method} {path}\n");
+                var logLine = $"{time} | IP: {user} | {method} {path}";
+
+                lock (_logLock)
+                {
+                    // 追加写入到运行目录下的 user_actions.log
+                    File.AppendAllText("user_actions.log", logLine + Environment.NewLine);
+                }
+            }
+            catch { /* 忽略日志写入错误，不要影响业务 */ }
         }
     }
+
     public void OnActionExecuting(ActionExecutingContext context) { }
 }
\ No newline at end of file