Tubular adenoma of the transverse colon is a pathologic diagnosis of a polyp of the transverse colon detected on colonoscopy and pathologically suggestive of a tubular adenoma on pathologic biopsy or colonoscopic polypectomy. Intestinal polyps are elevated lesions protruding from the mucosal surface of the intestines into the intestinal lumen, and are referred to as intestinal polyps until the nature of the pathology is determined. Their incidence increases with age and is more common in males. According to the pathology, they can be divided into adenomatous polyps and non-adenomatous polyps. Adenomatous polyps mainly include tubular adenomas, choriocapillaris adenomas, tubular choriocapillaris adenomas, and non-adenomatous polyps mainly include hyperplastic polyps, inflammatory polyps, and misshapen polyps. Transverse colon tubular adenoma is mainly found through colonoscopy, and it is recommended to be resected under colonoscopy as early as possible. In addition, patients must develop good dietary habits, quit smoking and drinking, reduce the intake of spicy food, and eat less smoked and barbecued food.