Colitis with diarrhea can generally eat, but the acute active period should be given fluids or semi-fluids, severe cases should be fasting, after the condition improves to change to a nutritious, easy to digest, less residue diet. Colitis is related to infection, autoimmunity, etc., often recurring, prolonged, especially with obvious diarrhea and other symptoms, to the patient’s life and spirit have a great impact, must actively cooperate with the treatment. Colitis acute exacerbation of the diet should be fluids or semi-fluids, such as millet porridge, milk, rice soup, soft noodles, severe cases should be temporarily fasting, after the improvement of the condition into a nutrient-rich, easy to digest, less residue diet, high-fiber, coarse grains, soybean products and other foods must be eaten sparingly to avoid greasy, spicy food, avoid tobacco and alcohol stimulation. Colitis with diarrhea should go to the hospital, under the guidance of the doctor’s treatment.