Thanks for you replying.
First,I think creating a custom theme is a methord,but i think it is a little difficult.i think the CheckButton is fine,so i need to find something similar to creating a custom theme.
Second,i think place the CheckButton in a Control node can work in a pinch.But it doesn's accord with the godot's designing style.If there is nothing better i will try this way.
Finally,maybe i will create a enhancement case in github for further help.
Again appreciate your help, it really help me a lot.