The recurrence of sigmoid colon cancer is still more serious, and it is necessary to go to the hospital for follow-up diagnosis as early as possible and take surgical treatment or conservative treatment measures according to the condition. Sigmoid colon cancer is a kind of intestinal cancer, and its incidence site is in the sigmoid colon. For diagnosed sigmoid colon cancer patients, surgery is the main treatment. Resecting the lesion tissue and clearing the surrounding lymph nodes at the same time can reduce the chance of lesion recurrence and metastasis after surgery. If patients have lesion recurrence after surgery, it is recommended to go to the hospital as early as possible. If the patient is in good physical condition and the lesion is relatively limited, and there is still surgical value and conditions for surgery, a second surgery can be considered to remove the lesion, restore the anatomy of the digestive system, and improve the patient’s quality of life. If the patient is unable to tolerate a larger operation or is in serious condition, palliative surgical measures can be considered. Perform abdominal wall fistula surgery to ensure normal defecation and quality of life for patients. At the same time, targeted drug therapy, radiotherapy treatment and other measures are actively taken to help stabilize the patient’s condition and maximize survival time.