Laryngeal cancer treatment is divided into postoperative radiotherapy and pure radical radiotherapy or radiotherapy.1. Postoperative supplemental radiotherapy is more effective for laryngeal cancer, with a five-year survival rate of up to 80% for early and middle stages and up to 90% for stage I. The effect of middle and late stages will be worse, around 70%, and if surgery cannot be removed, there is no safe margin or there is residual, it will be lower than 70%, around 50%.2. Radical radiotherapy is more effective for early and middle stages good, while the survival rate of middle and late stage treatment is about 10%-20% lower than that of post-surgical radiotherapy.