Tofu scum tumors are mostly sebaceous cysts, commonly known as comedones, which usually do not go away on their own. It can be treated by surgery and has a good prognosis through active treatment. Sebaceous cysts are mainly due to the sebaceous gland oil secretion excretion obstacle, so that the sebaceous gland ducts of the blockage, into a localized cystic cavity, containing soya bean residue. Sebaceous cysts generally can not disappear on their own, the treatment can take cystectomy surgery, complete excision outside the peritoneum, not easy to recur. Sebaceous cysts are not treated in time may gradually become larger, or lead to secondary infection and other symptoms. It is recommended to go to the regular hospital surgery or dermatology department in time, and follow the doctor’s instructions to standardize the treatment. The skin hygiene should be emphasized in your life.