diff --git a/SunnyUI/Controls/DropItem/UIDropControl.cs b/SunnyUI/Controls/DropItem/UIDropControl.cs
index d564cbbe..5765f519 100644
--- a/SunnyUI/Controls/DropItem/UIDropControl.cs
+++ b/SunnyUI/Controls/DropItem/UIDropControl.cs
@@ -64,7 +64,7 @@ namespace Sunny.UI
             edit.Invalidate();
             Controls.Add(edit);
 
-            lastEditHeight = edit.Height;
+            firstEditHeight = lastEditHeight = edit.Height;
             Width = 150;
             Height = 29;
 
@@ -76,6 +76,7 @@ namespace Sunny.UI
             ControlBoxRect = new Rectangle(Width - 24, 0, 24, Height);
         }
 
+        int firstEditHeight = -1;
         int lastEditHeight = -1;
         private void Edit_SizeChanged(object sender, EventArgs e)
         {
@@ -411,6 +412,14 @@ namespace Sunny.UI
                 NoNeedChange = false;
             }
 
+            if (edit.Height + RectSize * 2 + 2 < firstEditHeight && Height > firstEditHeight)
+            {
+                NoNeedChange = true;
+                Height = firstEditHeight;
+                edit.Top = (Height - edit.Height) / 2;
+                NoNeedChange = false;
+            }
+
             if (edit.Top != (Height - edit.Height) / 2 + 1)
             {
                 edit.Top = (Height - edit.Height) / 2 + 1;
diff --git a/SunnyUI/Controls/UITextBox.cs b/SunnyUI/Controls/UITextBox.cs
index 3cdc497c..1d35ea03 100644
--- a/SunnyUI/Controls/UITextBox.cs
+++ b/SunnyUI/Controls/UITextBox.cs
@@ -132,7 +132,7 @@ namespace Sunny.UI
             bar.MouseEnter += Bar_MouseEnter;
             TextAlignment = ContentAlignment.MiddleLeft;
 
-            lastEditHeight = edit.Height;
+            firstEditHeight = lastEditHeight = edit.Height;
             Width = 150;
             Height = 29;
 
@@ -140,6 +140,7 @@ namespace Sunny.UI
             TextAlignmentChange += UITextBox_TextAlignmentChange;
         }
 
+        int firstEditHeight = -1;
         int lastEditHeight = -1;
         private void Edit_SizeChanged(object sender, EventArgs e)
         {
@@ -734,6 +735,14 @@ namespace Sunny.UI
                     NoNeedChange = false;
                 }
 
+                if (edit.Height + RectSize * 2 + 2 < firstEditHeight && Height > firstEditHeight)
+                {
+                    NoNeedChange = true;
+                    Height = firstEditHeight;
+                    edit.Top = (Height - edit.Height) / 2;
+                    NoNeedChange = false;
+                }
+
                 if (edit.Top != (Height - edit.Height) / 2 + 1)
                 {
                     edit.Top = (Height - edit.Height) / 2 + 1;