After surgical resection and treatment of tubular adenomas of the sigmoid colon, there is a certain chance of recurrence, requiring patients to undergo regular postoperative review. The sigmoid region is susceptible to polypoid lesions, and the main types of polyps include inflammatory polyps, adenomatous polyps, misshapen polyps, and hyperplastic polyps. One of the common pathological types of adenomatous polyps is tubular adenoma. This is a benign category of lesions, and in a few patients, cancerous potential may occur. When polyp lesions are detected during colonoscopy, they can usually be removed by electrocoagulation cauterization, ligation, etc. during colonoscopy. Postoperative pathology is required to clarify the diagnosis. Due to the recurrence of this type of lesion, after removal of the polyp, the patient needs to repeat the colonoscopy about six months to a year to observe the health of the intestinal wall. If there is a recurrence of the polyp, another surgical removal is required. Most of the reasons for the recurrence of sigmoid tubular adenoma after surgery are that some adenomas are very small in size, not exposed to the mucous membrane and cannot be found, and then gradually grow up. Therefore, the patient should be examined regularly.