Rectal cancer belongs to malignant tumors, once there is recurrence, it is recommended to seek medical treatment and review in time, after clearing the recurrence, timely treatment through oncology specialties. 1. Seek medical treatment in time: rectal cancer is a kind of colorectal cancer, which can cause different degrees of blood in stool, purulent stool, abdominal pain, and even systemic symptoms. Rectal cancer has the tendency of recurrence, so it is recommended to go to hospital for CT, MRI and lower gastrointestinal endoscopy in time. Understand the degree of invasion and ask doctors to evaluate and make appropriate treatment plan. 2. Surgery: If the mass gradually increases in size, leading to narrowing of intestinal lumen and intestinal obstruction, if it can not be relieved by conservative treatment, it is recommended to treat it by surgery, which can relieve patients from intestinal narrowing or blockage. Rectal tumor recurrence is complicated, if distant metastasis, chemotherapy, targeted therapy or combined with local radiation therapy will be given in time. Rectal cancer has the tendency of recurrence, it is recommended to deal with it as early as possible to avoid further aggravation of the disease.