There is no such thing as the three most feared foods for colonic ulcers, and the principle of light, easy to digest should be followed in dietary choices, and the most important thing is to follow the doctor’s instructions for standardized treatment. Colon ulcers are endoscopic manifestations of the intestinal mucosa, not a generalized reference to a particular disease, causes colon ulcers have inflammatory bowel disease, infectious enteritis, etc., need to comply with the doctor’s instructions for targeted treatment. Diet after the discovery of colonic ulcer should eat light, nutritious, easy to digest, non-stimulating food, such as a variety of rice porridge, fresh vegetables and fruits, high protein food, etc., to supplement the body of patients with colonic ulcers need energy at the same time as much as possible to reduce the burden on the intestinal tract. Avoid intake of spicy, stimulating, greasy, raw and cold food, so as not to aggravate the progress of the disease. The effect of dietary therapy is limited, do not arbitrarily listen to false rumors, in the discovery of colonic ulcer, should be timely consultation, standardized treatment, so as not to delay the condition.