Colonic adenomas can usually be identified by fiber colonoscopy, pathology results and other tests to clarify the amount and malignancy. Colonic adenoma belongs to benign epithelial tumor of colon, is the most common colonic polyp, most common in sigmoid colon, can be divided into three categories, namely, tubular adenoma, villous adenoma, mixed adenoma, etc., there is no specific symptom at the initial stage, and with the development of the disease, abdominal pain, blood in the stool, urgency and heaviness can be seen. When the patient appears the change of defecation habit, as well as the symptom of abdominal pain, immediately go to the hospital for fiberoptic colonoscopy, which is the most intuitive examination for checking the polyps and colon adenomas, and also can complete the resection under the colonoscopy, and the final diagnosis of benignity and malignancy needs to rely on the pathology results. It is recommended to go to the regular hospital in a timely manner, under the guidance of the doctor for fiber colonoscopy, clear cause of the targeted treatment, do not self-medication in order to avoid causing adverse effects.