The main symptoms of chronic colitis include abdominal pain, diarrhea, or the presence of snot-like mucus in the stool. If there is anal pain, it may indicate the coexistence of hemorrhoids, as chronic colitis alone does not cause anal pain; anal pain is mainly due to hemorrhoids. Chronic colitis can be diagnosed through colonoscopy, which may reveal hyperemia, erosion, or edema of the intestinal mucosa, as well as white mucus adhering to the intestines. In terms of treatment, Western medicine primarily uses probiotics to regulate the intestinal flora, while Chinese medicine may involve oral administration of herbal medicines based on syndrome differentiation, as well as external treatments like moxibustion and enemas, which can also be effective.