diff --git a/NewFunction/FrmEditShapeFile.cs b/NewFunction/FrmEditShapeFile.cs
index 25b82d8..9788d45 100644
--- a/NewFunction/FrmEditShapeFile.cs
+++ b/NewFunction/FrmEditShapeFile.cs
@@ -159,13 +159,13 @@
         private void 添加字段ToolStripMenuItem_Click(object sender, EventArgs e)
         {
             FrmEditShapeFile_AddField frm = new FrmEditShapeFile_AddField(geoLayer, dataGridView1);
-            frm.Show(this);
+            frm.ShowDialog(this);
         }
 
         private void 删除字段ToolStripMenuItem_Click(object sender, EventArgs e)
         {
             FrmEditShapeFile_DeleteField frm = new FrmEditShapeFile_DeleteField(geoLayer, dataGridView1);
-            frm.Show(this);
+            frm.ShowDialog(this);
         }
 
         private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)