How long a rectal tumor can live depends on the type of rectal tumor, there are benign and malignant rectal tumors, benign rectal tumors mainly refer to rectal polyps and rectal adenomas, which can generally be cured after timely related treatment and have little impact on survival rate. For malignant rectal tumors, such as common rectal cancer, the five-year survival rate is higher in the early stage, while the late stage may only survive 1-2 years or even a few months. The treatment for early rectal cancer is mainly through surgical resection. When the cancerous tissues are surgically removed and there is no recurrence after surgery, the five-year survival rate is relatively high and can reach 80%-90%, and if there is no recurrence after more than five years, it can basically be defined as reaching clinical cure. Rectal cancer keeps developing, and when distant metastasis and cancer cell infiltration and invasion of surrounding tissues occur, it often indicates that rectal cancer is in advanced stage, and the treatment of rectal cancer in advanced stage often adopts chemotherapy, radiotherapy and resection, and surgery to remove the original cancer cells can preserve the anal sphincter, which can survive 1-2 years if the surgery is smooth. However, some patients have weaker constitution and are not sensitive to radiotherapy, and the survival time may be shortened to several months. To sum up, for patients with rectal tumor, if they want to judge their survival period, it is recommended that the treating physician should make a comprehensive assessment by combining their actual disease development and various physical indications.