In general, rectal cancer should be rechecked every 3 months in the first 2 years after surgery, every 6 months thereafter, and can be rechecked once a year after 5 years. For rectal cancer patients, regular follow-up is usually required after surgery, every 3 months for 2 years, if the condition is stable, the frequency can be reduced to every 6 months thereafter, and the recurrence rate of rectal cancer will be lower after 5 years, and can be reviewed once a year. Review usually includes consultation and comprehensive physical examination, blood routine, liver and kidney function, carcinoembryonic antigen, ultrasound, CT, colonoscopy and so on. It should be emphasized that this plan is only a general guiding recommendation, and the clinical application should be individualized according to the specific conditions of patients. The purpose of postoperative review of rectal cancer is to check whether there is recurrence of cancer lesions and distant metastasis of cancer cells, which is a necessary examination to ensure the treatment effect after rectal cancer surgery. In addition, patients should pay attention to diet, focusing on lightness, avoiding excessive nutritional intake, avoiding spicy and stimulating food, maintaining dietary diversity, and exercising appropriately.