肠易激综合征(IBS)属于功能性胃肠疾病,指的是一组包括腹痛、腹胀、排便习惯和大便性状异常、粘液便,持续存在或间歇发作,而又缺乏形态学和生化学异常改变可资解释的症状群。西方统计约占消化科病人的20%～40%[1],但是IBS的治疗效果却难尽人意。由于尚缺乏客观、可靠的病生标志 Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder and refers to a group of conditions including abdominal pain, abdominal distension, bowel habits and stool abnormalities, mucus, persistence or intermittent seizures, and lack of morphological and biochemical abnormalities Change the explanation group of symptoms. Western statistics account for about 20% to 40% of patients with gastroenterology [1], but the treatment effect of IBS is unsatisfactory. Because of the lack of objective, reliable signs of illness