Ulcerative colitis is a chronic non-specific inflammatory disease of the colon and rectum, diet is very important, easy to digest high calorie, high protein soft food is appropriate, limit fat intake, avoid food containing irritating and high fiber, such as celery, leek and with irritating onion, ginger, garlic, chili and coarse grains. Take vitamin supplements in moderation. Eat liquid food or semi-liquid food with less residue during acute attack, such as: rice paste, steamed egg, by flour, rice porridge, dragon’s beard noodles, etc. Forbid the use of raw and cold vegetables and fruits, but they can be made into vegetable water, vegetable puree, fruit juice and fruit puree for consumption.