Radiotherapy-induced skin injury usually takes about 2~4 weeks to recover, and some patients with skin ulceration and infection may need longer recovery time, some of them need about 2~3 months. Skin damage caused by radiotherapy is generally divided into 4 degrees according to the severity of the damage, generally 1~2 degrees of damage is often manifested as local skin redness, edema, etc., this mild damage is generally about 2~4 weeks after the end of radiotherapy can return to normal. While 3~4 degrees of skin damage is mainly manifested as local skin peeling, ulceration, etc., and there will be skin pigmentation and other changes in the later stage, at this time, the patient’s skin recovery time will be extended to about 2 months, and if the skin ulceration is combined with infection, the recovery time may be extended to about 3 months. Patients are advised to consult a doctor if they have any discomfort to avoid delay in treatment.