The incidence of skin cancer in my country is very low, but it is one of the most common malignant tumors in the white race, exceeding the sum of all other malignant tumors. The incidence of skin cancer in southern Australia is at least 650/100,000, and among Caucasians in the United States, the incidence of skin cancer is as high as 165/100,000, which is 100 times the incidence in my country. Among skin cancers, basal cell carcinoma is the most common, accounting for more than 60%. The early manifestations of various types of skin cancer are mostly erythematous lesions, accompanied by scaly desquamation or crust formation. It is not only difficult to distinguish its histological type by naked eye observation, but also easy to be confused with benign skin diseases such as psoriasis and eczema. Pathological examination is often required for diagnosis. Whether surgery, radiotherapy or other treatment methods, skin cancer has a good effect, and the cure rate can be over 90%.