diff --git a/src/DatabaseServices/Lights/DirectionalLight.ts b/src/DatabaseServices/Lights/DirectionalLight.ts
index 10448b310..fc119f624 100644
--- a/src/DatabaseServices/Lights/DirectionalLight.ts
+++ b/src/DatabaseServices/Lights/DirectionalLight.ts
@@ -1,6 +1,6 @@
 import { DirectionalLight as TDirectionalLight, Group, MathUtils, Matrix3, Matrix4, Object3D, Vector2, Vector3 } from "three";
 import { UpdateDraw } from "../../Common/Status";
-import { equalv3 } from "../../Geometry/GeUtils";
+import { equaln, equalv3 } from "../../Geometry/GeUtils";
 import { RenderType } from "../../GraphicsSystem/RenderType";
 import { AutoRecord } from "../AutoRecord";
 import { Factory } from "../CADFactory";
@@ -65,6 +65,32 @@ export class DirectionalLight extends Light
             this.Update();
         }
     }
+
+    get SunPosition() { return super.Position; }
+    set SunPosition(p: Vector3)
+    {
+        if (
+            equaln(p.x, this._Matrix.elements[12])
+            && equaln(p.y, this._Matrix.elements[13])
+            && equaln(p.z, this._Matrix.elements[14])
+        )
+            return;
+
+        this.WriteAllObjectRecord();
+        this._Matrix.setPosition(p);
+        this.Update(UpdateDraw.Geometry);
+    }
+
+    get Position() { return super.Position; }
+    set Position(p: Vector3)
+    {
+        console.error("不支持的用法! 错误的设计");
+        let bak = this._Target.toArray();
+        super.Position = p;
+        this._Target.fromArray(bak);
+        this.Update(UpdateDraw.Geometry);
+    }
+
     get WebIntensity()
     {
         let x = this._Intensity / 150;
@@ -92,7 +118,7 @@ export class DirectionalLight extends Light
         if (indexList[0] === 0)
             this.Position = this.Position.add(vec);
         else
-            this.Target = this.Target.add(vec);
+            this._Target.add((vec));
     }
     protected InitDrawObject(renderType: RenderType = RenderType.Wireframe): Object3D
     {
diff --git a/src/UI/Components/RightPanel/SunLightGui.tsx b/src/UI/Components/RightPanel/SunLightGui.tsx
index 3c2cf791f..dc6cfcb21 100644
--- a/src/UI/Components/RightPanel/SunLightGui.tsx
+++ b/src/UI/Components/RightPanel/SunLightGui.tsx
@@ -188,7 +188,7 @@ export default class SunLightGui extends Component
         rotate = MathUtils.degToRad(safeEval(rotate.toString()));
         pos = new Vector3(DefaultDist.dist * Math.cos(elevation), 0, DefaultDist.dist * Math.sin(elevation));
         pos.applyMatrix4(new Matrix4().makeRotationZ(rotate)).add(app.Database.SunLight.Target);
-        app.Database.SunLight.Position = pos;
+        app.Database.SunLight.SunPosition = pos;
 
         CalcSunShadowCameraExtents(app.Database.SunLight, false);
         app.Viewer.UpdateRender();
diff --git a/src/UI/Store/RightPanelStore/LightStore.ts b/src/UI/Store/RightPanelStore/LightStore.ts
index 1582d631b..95b483d53 100644
--- a/src/UI/Store/RightPanelStore/LightStore.ts
+++ b/src/UI/Store/RightPanelStore/LightStore.ts
@@ -661,7 +661,7 @@ export class RightPlaneLightStore implements IConfigStore
             sunLight.Color = new Color(cof.option.SunLightColor);
             sunLight.Temperature = cof.option.SunLightTemperature;
 
-            sunLight.Position = pos;
+            sunLight.SunPosition = pos;
 
             CalcSunShadowCameraExtents(app.Database.SunLight, false);
             app.Viewer.UpdateRender();