The incidence of skin cancer is very high, and people who work under the sun for a long time are prone to skin cancer. Long-term exposure to ultraviolet rays will seriously damage human skin, thus leading to skin cancer. Treatment of skin cancer 1.Drug treatment Mainly is drug external application, drug compress and drug injection. Cryotherapy is applicable to basal cell carcinoma and superficial squamous carcinoma, and it is more suitable for cases that recur after scraping and radiation therapy. The advantage of cryotherapy is that it has more beautiful wounds than curettage, and its cure rate can reach 95%-97%. For lesions on the eyelid, this method can still be used as long as the eye is covered with a hot protector. However, the recurrence rate of this method is high after treating scalp cancer, so it is mostly considered inappropriate to be used. 3.Radiation therapy Radiation therapy has good efficacy. Before determining radiation therapy, patient’s age, gender, tumor history and anatomical site of tumor must be taken into consideration. 4.Laser therapy Mainly use carbon dioxide laser therapy. Carbon dioxide laser can replace electric drying method. Carbon dioxide laser is an infrared beam with a wavelength of 10,600 nm. It can be used to vaporize the skin tumor when the beam is dispersed. 5.Surgical treatment At present, surgery is still one of the main methods to treat skin cancer. The scope of resection should vary according to the size of the tumor and the depth of infiltration. For basal cell carcinoma with small lesions, superficial and clear boundary, excision 0.5 cm from the edge of the tumor can generally achieve the purpose of cure. For cases with large lesions and extensive infiltration, resection should be performed 3-5 cm away from the primary lesion. Frozen section examination should be performed in hospitals with conditions.