Rectal cancer needs to be reviewed. After rectal cancer has been treated, regular review is also needed. The review can check whether the cancer cells have spread and how far the disease has progressed, and then the doctor will adjust the treatment plan in time. At present, rectal cancer can be treated to control and relieve the symptoms and prolong the life cycle of patients. Therefore, it is necessary to have regular review and adjust the treatment plan in time. Even for patients who have undergone radical resection for rectal cancer in early stage, regular review is necessary to observe whether there is any spread of cancer cells. The main items of review examination include blood routine, urine routine, tumor marker examination, colonoscopy, liver and kidney function examination, abdominal ultrasound, CT and so on. If cancer cells are found to have spread or metastasized during the examination, relevant treatments need to be carried out in time. Patients should also maintain a positive and optimistic mindset to fight against the disease.