Chronic colitis after treatment most of the life expectancy is not very different from that of a normal person, and can be survived for a long time. Chronic colitis may be environmental, immune, genetic, infection and other factors lead to chronic inflammatory lesions of the colonic mucosa, manifested as intestinal mucosal congestion, edema, erosion and so on. Manifested as abdominal pain, diarrhea, acute and severe symptoms, after active and effective control of the disease, usually does not affect the life expectancy, and there is no great difference with the survival time of normal people, most patients can survive for a long time. If chronic colitis recurs, it may cause intestinal obstruction, intestinal perforation or even induce cancer, and this condition has a certain impact on the life expectancy of patients. Patients with chronic colitis, it is recommended to seek timely medical treatment and cooperate with physicians to standardize treatment.