diff --git a/插件库/Lskj.Main/FrmMain.cs b/插件库/Lskj.Main/FrmMain.cs
index 7f1564d..4ce575b 100644
--- a/插件库/Lskj.Main/FrmMain.cs
+++ b/插件库/Lskj.Main/FrmMain.cs
@@ -138,7 +138,7 @@ namespace Lskj.Main
 
                 if (SystemInfo.Instance.DisplayWatermark)
                 {
-                    watermarkForm = new FrmWatermark();
+                    watermarkForm = new FrmWatermark(this);
                     watermarkForm.Size = this.ClientSize; // 设置水印窗体的大小与主窗体客户端区域相同
                     watermarkForm.Location = this.PointToScreen(new Point(0, 0)); // 将水印窗体定位到主窗体的位置
                     watermarkForm.TopMost = true; // 确保水印窗体始终位于最顶层
diff --git a/插件库/Lskj.Main/FrmWatermark.cs b/插件库/Lskj.Main/FrmWatermark.cs
index e3eb8be..3576e5a 100644
--- a/插件库/Lskj.Main/FrmWatermark.cs
+++ b/插件库/Lskj.Main/FrmWatermark.cs
@@ -15,9 +15,15 @@ namespace Lskj.Main
 {
     public partial class FrmWatermark : Form
     {
-        public FrmWatermark()
+        // 保存主窗体引用，用于同步位置和大小
+        private Form _mainForm;
+
+        public FrmWatermark(Form mainForm)
         {
             InitializeComponent();
+
+            _mainForm = mainForm; // 接收主窗体引用
+
             this.FormBorderStyle = FormBorderStyle.None;
             this.ControlBox = false;
             this.ShowInTaskbar = false;
@@ -28,6 +34,69 @@ namespace Lskj.Main
             this.Opacity = 0.2;
             //重绘界面，绘制水印
             this.Paint += FrmWatermark_Paint;
+
+
+            // 监听主窗体的移动和大小变化（关键修复）
+            if (_mainForm != null)
+            {
+                _mainForm.LocationChanged += MainForm_LocationChanged;
+                _mainForm.SizeChanged += MainForm_SizeChanged;
+                _mainForm.VisibleChanged += MainForm_VisibleChanged;
+                _mainForm.FormClosing += MainForm_FormClosing;
+            }
+
+            // 初始同步位置和大小
+            SyncPositionAndSize();
+
+        }
+
+        // 主窗体位置变化时同步水印位置
+        private void MainForm_LocationChanged(object sender, EventArgs e)
+        {
+            SyncPositionAndSize();
+        }
+
+        // 主窗体大小变化时同步水印大小和位置
+        private void MainForm_SizeChanged(object sender, EventArgs e)
+        {
+            SyncPositionAndSize();
+        }
+
+        // 主窗体显示状态变化时同步
+        private void MainForm_VisibleChanged(object sender, EventArgs e)
+        {
+            this.Visible = _mainForm.Visible;
+            if (_mainForm.Visible)
+            {
+                SyncPositionAndSize();
+                this.BringToFront();
+            }
+        }
+
+        // 主窗体关闭时同步关闭水印
+        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            this.Close();
+        }
+
+        // 同步水印窗体与主窗体的位置和大小
+        private void SyncPositionAndSize()
+        {
+            if (_mainForm == null || _mainForm.IsDisposed) return;
+
+            // 关键修复：在多屏幕环境下正确计算位置
+            this.Size = _mainForm.ClientSize;
+            this.Location = _mainForm.PointToScreen(new Point(0,30));
+
+            // 确保水印在主窗体上方
+            if (_mainForm.WindowState != FormWindowState.Minimized)
+            {
+                this.TopMost = true;
+                this.BringToFront();
+            }
+
+            // 强制重绘
+            this.Invalidate();
         }
 
         private void FrmWatermark_Paint(object sender, PaintEventArgs e)
@@ -57,48 +126,8 @@ namespace Lskj.Main
                     int x = 20;
                     int y = 20;
 
-                    for (int i = 30; i < this.Height - 40; i=i+150)
+                    for (int i = 30; i < this.Height - 40; i=i+200)
                     {
-                        for (int j = 40; j < this.Width - 40; j = j + 200)
+                        for (int j = 40; j < this.Width - 40; j = j + 250)
                         {
-                            graphicsText.DrawString(ERPInfo.Instance.UserName, new Font("宋体", 15, FontStyle.Bold), brush, new PointF(j,i), format, -30f);
-                        }
-
-                    }
-                    e.Graphics.TranslateTransform(x, y);
-                    e.Graphics.RotateTransform(-20f);
-                    //e.Graphics.DrawRectangle(pen, new Rectangle(-45, -19, 90, 32));
-                }
-                e.Graphics.ResetTransform();
-
-            }
-            catch (Exception ex)
-            {
-                string Message = ErrorMessage.PromptErrorMessage(ex);
-                //MessageUtil.Show(Message, ex.Message);
-            }
-        }
-
-
-        /// <summary>
-        /// 鼠标穿透水印操作下方
-        /// </summary>
-        protected override CreateParams CreateParams
-        {
-            get
-            {
-                CreateParams cp = base.CreateParams;
-                cp.ExStyle |= 0x00000020; // 设置 WS_EX_TRANSPARENT 样式
-                return cp;
-            }
-        }
-
-        //protected override void OnPaintBackground(PaintEventArgs e)
-        //{
-        //    // 不执行基类的背景绘制方法，以达到窗口穿透的效果
-        //}
-
-
-
-    }
-}
+                            graphicsText.DrawString(ERPInfo.Instanc
\ No newline at end of file