Five-year survival rate” is often used in medicine to evaluate the effectiveness of cancer treatment. However, many people do not understand this, thinking that patients can only survive for five years, and they will be terrified after hearing the five-year survival rate, thinking that it is a warning of death. The five-year survival rate has a certain scientific nature. After the treatment of a certain tumor, some of them may develop metastasis and recurrence, and some of them may die because the tumor enters advanced stage. Metastasis and recurrence mostly occur within three years after radical surgery, accounting for about 80%, and a small proportion occurs within five years after radical surgery, accounting for about 10%. Therefore, the chance of recurrence is rare if there is no recurrence within five years after radical surgery for various tumors, so the five-year survival rate is often used to indicate the efficacy of various cancers. Within five years after surgery, it is important to consolidate treatment and regular checkups to prevent recurrence, and even if there is metastasis and recurrence, it can be treated early. In addition, three-year survival rate and ten-year survival rate are also used to indicate the efficacy of treatment. The five-year survival rate of cancer treatment is used by doctors to evaluate the effectiveness of surgery and treatment. If a cancer patient can survive for more than five years after surgery, it is considered that the possibility of tumor being cured is 90%. Therefore, the “five-year survival rate” does not mean that the patient can only live for five years, but that the patient is close to being cured. Cancer patients need to have regular check-ups and cooperate with doctors actively during and after the five-year period after treatment in order to live a long and healthy life.