Cupping, an ancient Chinese clinical practice to cure disease, is an indispensabile part of TCM. It uses various cups to reduce the pressure in the cups by transforming air into heat or exhausting the air out there. So that the cups can suck on the skin or superficial muscle layer. Cupping is the external treatment by regulating meridians. Cupping treatment, encompassing a long history, is the valuable experience accumulated by ancient Chinese when dealing with diseases for a long time. Now cupping has become a key method of curing disease, an independent field of TCM.