随着人们饮食结构的改变以及心理和社会因素等多方面的影响 ,便秘已成为影响现代人生活质量的重要因素之一。我国北京、西安等地区的流行病学调查显示慢性便秘发病率在 6 1 %～ 9 2 % [1] ,美国的 1项调查显示 2 0 %的健康人群受到便秘的困扰 ,而且便秘也与结肠癌、心、脑血管? Constipation has become one of the important factors affecting the quality of life of modern people with the change of people’s diet structure and the psychological and social factors. Epidemiological surveys in Beijing, Xi’an and other regions of China show that the incidence of chronic constipation ranges from 61% to 92% [1]. One survey in the United States shows that 20% of the healthy population suffer from constipation, and constipation is also associated with colon Cancer, heart, brain blood vessels?