It is best not to eat watermelon, which is a bloat-prone food. Other bloat-prone foods include cantaloupe, leeks, onions, garlic, fried foods, coffee, carbonated beverages and so on. The patient should not eat beans and soy products, wheat and pasta products, spicy, cold and irritating foods, and avoid smoking and alcohol during the attack and remission period. Cold food refers to cold fruits, cold drinks, cold dishes, cold meals, etc. Spicy and irritating foods, including chili peppers, raw onions, raw ginger, raw garlic, onions and other foods. Some fresh fruits should not be eaten, but persimmons, pomegranates, apples contain tannic acid and pectin, all of which have an astringent and antidiarrheal effect, and can be used appropriately by patients with colitis.