Ulcerative colitis is an idiopathic inflammatory disease of the intestine, which is associated with infectious, genetic, environmental and immune factors. It is often characterized by bloody diarrhea, ranging from 2-4 times a day in mild cases to 10-30 times a day in severe cases, abdominal pain, usually limited to the left lower abdomen or paroxysmal cramping pain in the lower abdomen, and even systemic manifestations such as anemia, fever, and malnutrition. Therefore, in addition to drug treatment, the usual preventive care is also quite important. For patients with long-term recurrent attacks or persistent instability, it is important to maintain a relaxed and quiet mood, to live and work normally, to avoid strain, and to prevent intestinal infections, which can play a role in preventing recurrence or further development of the disease. 2, pay attention to dietary conditioning, abdominal pain, diarrhea, it is appropriate to eat less slag, easy to digest, low-fat, high-protein diet; suspicious intolerance of food, such as fish, shrimp, crab, turtle, milk, peanuts, etc. should be avoided as far as possible; should avoid eating chili, avoid eating frozen, cold food, quit smoking and drinking habits. Dampness and heat can drink green tea water, horsetail soup; weak spleen and stomach, can enter more lotus seeds, yam, gorgonian, lotus root powder and other foods. 3, mild patients can continue to work while treatment, while patients with severe and acute disease should rest in bed to reduce intestinal peristalsis and symptoms and reduce physical exertion.