Chronic colitis, besides hospitalization, diet conditioning is also very important. Soft, digestible and nutritious food should be used in daily diet. Avoid irritating food. You can also choose to eat some foods or drugs with antibacterial, anti-inflammatory, heat-clearing and detoxification effects, such as Malantou, Portulaca oleracea, Chrysanthemum Brain and so on. During the intermission of the disease, you can eat some foods with astringent effects, such as lotus seeds, coix seed, gordon euryales, old rice, etc.