Despite its supplementary role for a remedy of the Ulcerative Colitis, nutritional therapy performs the important role as well as medicine. In the active state, the aim of nutrition therapy is to reduce the activity of the disease. In the remission state, the aim is to keep the condition and to supply elements of nutrition which the disease causes these deficiency such as vitamins or minerals. Needless to say, it is required to consider a few points; patient's condition, lesion's digestion disorder and leakage, or side effects of caused by medicines. High calorie, low fat and rich protein is ideal for the nutrition therapy for this disease, however it is suggested to satisfy patient's mental health at the same time. Nutrition therapy for Ulcerative Colitis should be regarded as the long-term treatment that requires the co-operation and comprehension between patients and medical supporting staffs.