Circumcision of rectal cancer residual surface mainly refers to the surgery of removing part of the veins and blood vessels under the rectal mucosa in a circular shape and then reanastomosing them locally. Patients are recommended to go to regular hospitals for the operation, and electrocardiogram, blood routine, coagulation function or liver and kidney function and other relevant examinations should be carried out before the operation, and the operation can be carried out only if the patients do not have any contraindications. In addition, radiotherapy and chemotherapy can also be used as adjuvant treatments. After the surgery, patients should pay attention to keep the local area clean and use suppositories with anti-inflammatory and heat-clearing properties regularly, such as Mexizolone suppository, Mesalazine suppository, Compound Keratine suppository, etc. Meanwhile, patients should pay attention to the regularity of the diet and keep the bowel movement smooth, so as to prevent the occurrence of intestinal obstruction disease. Patients are advised to go to the hospital for regular check-ups after the operation, and if there is any abnormality, they should seek immediate medical treatment.