diff --git a/Assets/Scripts/Actions/CameraSwitchAction.cs b/Assets/Scripts/Actions/CameraSwitchAction.cs
index a4993937..48f0e77d 100644
--- a/Assets/Scripts/Actions/CameraSwitchAction.cs
+++ b/Assets/Scripts/Actions/CameraSwitchAction.cs
@@ -63,7 +63,10 @@ namespace QFramework
                 data.normalPos = Utility.GetVector3FromStrArray(datas["normalPos"]);
                 data.normalRot = Utility.GetVector3FromStrArray(datas["normalRot"]);
             }
-
+            if (datas.ContainsKey("isOn"))
+            {
+                data.isOn = datas["isOn"];
+            }
             float.TryParse(datas["nearTime"], out data.nearTime);
             float.TryParse(datas["normalTime"], out data.normalTime);
 
diff --git a/Assets/Scripts/UI/UICameraSwitch.cs b/Assets/Scripts/UI/UICameraSwitch.cs
index 4020e826..839b2ac1 100644
--- a/Assets/Scripts/UI/UICameraSwitch.cs
+++ b/Assets/Scripts/UI/UICameraSwitch.cs
@@ -16,6 +16,7 @@ namespace QFramework.Example
         public Vector3 normalRot;
         public float nearTime;
         public float normalTime;
+        public string isOn;
 
     }
     public partial class UICameraSwitch : UIPanel
@@ -58,14 +59,28 @@ namespace QFramework.Example
         protected override void OnOpen(IUIData uiData = null)
         {
             mData = uiData as UICameraSwitchData ?? new UICameraSwitchData();
-
-            if (Near.isOn)
+            if (string.IsNullOrEmpty(mData.isOn))
             {
-                SetNear();
+                if (Near.isOn)
+                {
+                    SetNear();
+                }
+                if (Far.isOn)
+                {
+                    SetNormal();
+                }
             }
-            if (Far.isOn)
+            else
             {
-                SetNormal();
+                switch (mData.isOn)
+                {
+                    case "near":
+                        SetNear();
+                        break;
+                    case "normal":
+                        SetNormal();
+                        break;
+                }
             }
         }
 
diff --git a/Assets/Scripts/Xml/XmlParser.cs b/Assets/Scripts/Xml/XmlParser.cs
index b894aabf..c72821f9 100644
--- a/Assets/Scripts/Xml/XmlParser.cs
+++ b/Assets/Scripts/Xml/XmlParser.cs
@@ -666,6 +666,11 @@ namespace XMLTool
                         {
                             act.args.Add("normalTime", "0");
                         }
+                        XAttribute isOn = action.Attribute("isOn");
+                        if (isOn != null)
+                        {
+                            act.args.Add("isOn", isOn.Value);
+                        }
                         newAction = act;
                     }
                     break;
diff --git a/Doc/Xml配置文档.xml b/Doc/Xml配置文档.xml
index 701cbb8d..ff8c6aaf 100644
--- a/Doc/Xml配置文档.xml
+++ b/Doc/Xml配置文档.xml
@@ -51,8 +51,9 @@
 	<Action type="SetScore" name="步骤名字" value="1"></Action>
 	<!--镜头切换 近距离和默认 如果有了nearDevice就可以不用nearPos和nearRot了  按照device的坐标和旋转来处理镜头 normalDevice同理
 	只设置坐标 不执行镜头切换 是否执行要根据UI的按钮操作来
+	isOn: near或者normal 作为强制选择一个镜头
 	-->
-	<Action type="CameraSwitch" nearDevice="肠钳" normalDevice="组织钳"  nearPos="-3.942,3.24,-4.319" nearRot="16.42331,180,0" nearTime="1" normalPos="-3.942,3.24,-3.946" normalRot="16.42331,180,-5.305351E-14" normalTime="1"></Action>
+	<Action type="CameraSwitch" nearDevice="肠钳" normalDevice="组织钳"  nearPos="-3.942,3.24,-4.319" nearRot="16.42331,180,0" nearTime="1" normalPos="-3.942,3.24,-3.946" normalRot="16.42331,180,-5.305351E-14" normalTime="1" isOn="near"></Action>
 	<!--文字弹窗 按钮可以多个 点击事件使用UIClick-->
 	<Action type="TextTip" value="这里是文字描述" audio="q001.mp3" btns="确定,取消"/>
 	<!--锁定镜头 value为是否锁定-->