diff --git a/packages/ui/src/Utils.ts b/packages/ui/src/Utils.ts
index caa8f6d019..a788fe8968 100644
--- a/packages/ui/src/Utils.ts
+++ b/packages/ui/src/Utils.ts
@@ -35,7 +35,7 @@ export class Utils {
     listeningEntities.length = 0;
   }
 
-  static getCanvasInParents(entity: Entity, root?: Entity): UICanvas {
+  static getRootCanvasInParents(entity: Entity, root?: Entity): UICanvas {
     entity = entity.parent;
     let rootCanvas: UICanvas = null;
     while (entity && entity !== root) {
diff --git a/packages/ui/src/component/UICanvas.ts b/packages/ui/src/component/UICanvas.ts
index 4aad1202c2..bc297e7704 100644
--- a/packages/ui/src/component/UICanvas.ts
+++ b/packages/ui/src/component/UICanvas.ts
@@ -279,7 +279,7 @@ export class UICanvas extends Component implements IElement {
     const entity = this.entity;
     // @ts-ignore
     entity._dispatchModify(EntityUIModifyFlags.CanvasEnableInScene, this);
-    const rootCanvas = Utils.getCanvasInParents(entity);
+    const rootCanvas = Utils.getRootCanvasInParents(entity);
     if (rootCanvas) {
       this._setIsRootCanvas(false);
       Utils._registerElementToCanvas(this, null, rootCanvas);
@@ -302,8 +302,7 @@ export class UICanvas extends Component implements IElement {
   _canvasListener(flag: number, param: any): void {
     if (this._isRootCanvas) {
       if (flag === EntityModifyFlags.Parent) {
-        const entity = this.entity;
-        const rootCanvas = Utils.getCanvasInParents(entity);
+        const rootCanvas = Utils.getRootCanvasInParents(this.entity);
         if (rootCanvas) {
           this._setIsRootCanvas(false);
           Utils._registerElementToCanvas(this, null, rootCanvas);
@@ -317,7 +316,7 @@ export class UICanvas extends Component implements IElement {
       }
     } else {
       if (flag === EntityModifyFlags.Parent) {
-        const rootCanvas = Utils.getCanvasInParents(this.entity);
+        const rootCanvas = Utils.getRootCanvasInParents(this.entity);
         if (rootCanvas) {
           this._setIsRootCanvas(false);
           Utils._registerElementToCanvas(this, this._canvas, rootCanvas);
@@ -538,7 +537,7 @@ export class UICanvas extends Component implements IElement {
             const componentType = (element as unknown as Component)._componentType;
             if (componentType === ComponentType.UICanvas) {
               const canvas = element as unknown as UICanvas;
-              const rootCanvas = Utils.getCanvasInParents(element.entity, root);
+              const rootCanvas = Utils.getRootCanvasInParents(element.entity, root);
               if (rootCanvas) {
                 canvas._setIsRootCanvas(false);
                 Utils._registerElementToCanvas(canvas, this, rootCanvas);
diff --git a/packages/ui/src/component/UIGroup.ts b/packages/ui/src/component/UIGroup.ts
index 05800c98f5..410ef2ce63 100644
--- a/packages/ui/src/component/UIGroup.ts
+++ b/packages/ui/src/component/UIGroup.ts
@@ -151,7 +151,7 @@ export class UIGroup extends Component implements IGroupAble {
    */
   _getCanvas(): UICanvas {
     if (this._isCanvasDirty) {
-      const curCanvas = Utils.getCanvasInParents(this.entity);
+      const curCanvas = Utils.getRootCanvasInParents(this.entity);
       Utils._registerElementToCanvas(this, this._canvas, curCanvas);
       Utils._registerElementToCanvasListener(this, curCanvas);
       this._isCanvasDirty = false;
diff --git a/packages/ui/src/component/UIRenderer.ts b/packages/ui/src/component/UIRenderer.ts
index da08b8c7db..4fdd4d43dc 100644
--- a/packages/ui/src/component/UIRenderer.ts
+++ b/packages/ui/src/component/UIRenderer.ts
@@ -172,7 +172,7 @@ export abstract class UIRenderer extends Renderer implements IGraphics {
    */
   _getCanvas(): UICanvas {
     if (this._isCanvasDirty) {
-      const curCanvas = Utils.getCanvasInParents(this.entity);
+      const curCanvas = Utils.getRootCanvasInParents(this.entity);
       Utils._registerElementToCanvas(this, this._canvas, curCanvas);
       Utils._registerElementToCanvasListener(this, curCanvas);
       this._isCanvasDirty = false;
diff --git a/packages/ui/src/component/advanced/Label.ts b/packages/ui/src/component/advanced/Label.ts
index 1d154e7fbc..19a21055d3 100644
--- a/packages/ui/src/component/advanced/Label.ts
+++ b/packages/ui/src/component/advanced/Label.ts
@@ -210,7 +210,6 @@ export class Label extends UIRenderer implements ITextRenderer {
     // @ts-ignore
     this.setMaterial(engine._basicResources.textDefaultMaterial);
   }
-  z;
 
   /**
    * @internal
diff --git a/packages/ui/src/component/interactive/UIInteractive.ts b/packages/ui/src/component/interactive/UIInteractive.ts
index bcf8dbca2e..d420c158d7 100644
--- a/packages/ui/src/component/interactive/UIInteractive.ts
+++ b/packages/ui/src/component/interactive/UIInteractive.ts
@@ -154,7 +154,7 @@ export class UIInteractive extends Script implements IGroupAble {
    */
   _getCanvas(): UICanvas {
     if (this._isCanvasDirty) {
-      const curCanvas = Utils.getCanvasInParents(this.entity);
+      const curCanvas = Utils.getRootCanvasInParents(this.entity);
       Utils._registerElementToCanvas(this, this._canvas, curCanvas);
       Utils._registerElementToCanvasListener(this, curCanvas);
       this._isCanvasDirty = false;
diff --git a/packages/ui/src/input/UIPointerEventEmitter.ts b/packages/ui/src/input/UIPointerEventEmitter.ts
index 88f92cbd02..4764557728 100644
--- a/packages/ui/src/input/UIPointerEventEmitter.ts
+++ b/packages/ui/src/input/UIPointerEventEmitter.ts
@@ -86,7 +86,6 @@ export class UIPointerEventEmitter extends PointerEventEmitter {
         }
       }
     }
-    return null;
   }
 
   override processDrag(pointer: Pointer): void {