溃疡性结肠炎(UC)是一种结直肠慢性非特异性炎症性疾病,其病变局限在大肠黏膜及黏膜下层,多位于乙状结肠和直肠,也有可能延伸到降结肠~([1])。该疾病发病原因不明,在遗传易感基因基础上由环境和免疫因素相互影响~([2])。溃疡性结肠炎最初有血性腹泻的早期症状,其他症状依次有腹痛、便血、体重减轻、里急后重、呕吐等。偶尔主要表现为关节炎,虹膜睫状体炎,肝功能障碍和皮肤病 Ulcerative colitis (UC) is a chronic nonspecific inflammatory disease of the colorectum. Its lesions are confined to the mucosa and submucosa of the large intestine, mostly in the sigmoid colon and rectum, and may also extend to the descending colon (1). The cause of the disease is unknown, based on genetic susceptibility genes by the interaction of environmental and immune factors ~ ([2]). Ulcerative colitis initially bloody early symptoms of bloody diarrhea, followed by other symptoms of abdominal pain, blood in the stool, weight loss, tenesmus, vomiting and so on. Occasionally, the main manifestations of arthritis, iridocyclitis, liver dysfunction and skin diseases