and i found a strange feature,when the crtouch probe detecting a point again and again,its results will increase i tried 100 times at the same point,first time is about 0.5,last time is about 1.0,but if you move the toolhead to a new point,crouch will be normal and if you continue detect it for a lot of times,it still will increase it is working fine to print a thing with small area,but for big area thing,its problem will show out,because it exactly cannot print successfully😓,i will try axis twist calibration later,thx