Ulcerative colitis can occur at any age, from infants to the elderly. However, it is more common in the 20-49 age group. Ulcerative colitis is an unexplained chronic inflammatory bowel disease that can occur at any age, but is more common in the 20-49 year old age group. It can occur anywhere in the colon and rectum, with the rectum and sigmoid colon being the most common. The main manifestations of the patient are abdominal pain, diarrhea, urgency and heaviness, mucus, pus and blood stools, and the disease is prone to prolonged and recurrent episodes. The treatment principle of this disease is to control the acute attack, maintain remission, reduce recurrence and prevent complications. The treatment of this disease mainly consists of symptomatic treatment and drug treatment, symptomatic treatment includes maintaining the water-electrolyte balance, protein supplementation, etc., and the common drugs used in drug treatment include glucocorticoids, mesalazine, azathioprine, etc.. Surgery can be considered for patients with serious complications. If there are suspicious symptoms of ulcerative colitis, please go to the hospital in time to avoid delay.