尝试将方法名称更改为“OnPointerEnter”/“OnPointerExit”。否则，图像可能不会随对象的大小而缩放。因此，请获取图像引用并直接缩放它：

private Image playButton;

public void Start() 
 {
     image = GetComponent<Image>();
 }
public void PointerEnter()
 {
     image.transform.localScale = new Vector2(1.5f, 1.5f);

 }

 public void PointerExit()
 {
     image.transform.localScale = new Vector2(1f, 1f);
 }

我会实现IPointerEnterHandle/IPointerExitHandler，例如：

public class Hover : MonoBehaviour, IPointerEnterHandle, IPointerExitHandler
{
    public void OnPointerEnter(EventSystems.PointerEventData eventData); 
    {
        transform.localScale = new Vector2(1.5f, 1.5f);
    }
 
    public void OnPointerExit(EventSystems.PointerEventData eventData); 
    {
        transform.localScale = new Vector2(1f, 1f);
    }
}

并且根本不使用EventTrigger。
或者，您也可以直接继承和覆盖，例如：

public class HoverButton : Button
{
    public override void OnPointerEnter(PointerEventData eventData)
    {
        base.OnPointerEnter(eventData);
        
        transform.localScale = new Vector2(1.5f, 1.5f);
    }
    
    public override void OnPointerExit(PointerEventData eventData)
    {
        base.OnPointerExit(eventData);
        
        transform.localScale = new Vector2(1f, 1f);
    }
}

• 请注意：由于Button有一个特殊的检查器，您将无法向检查器公开任何字段，除非您实现自己的自定义编辑器继承自ButtonEditor。*