Cancer is a disease that is becoming more and more common nowadays and seriously threatens people’s life and health. But people who have cancer do not necessarily have special characteristics, it is possible that their living habits are not too good, such as often staying up late, smoking, alcoholism, etc. The occurrence of cancer is not only related to bad living habits, but also to environmental factors, genetic factors and genetic mutations. Some patients look no different from other normal people, but no matter what, it is important to have regular health checkups to detect and treat any problems early. Many early stage cancers are very effective to be cured by surgery early, but of course, there are also some that have the possibility of recurrence after surgery. This kind of post-operative combined treatment with adjuvant radiotherapy and chemotherapy can also improve this situation and can prevent recurrence and metastasis.