便秘是指粪便在肠道内滞留过久,秘结不通,排便周期延长,或周期不长但粪便干结,排出艰难,或粪质不硬,虽有便意,但便而不畅的病症。它是一种症状,而不是一种疾病。通常以排便频率减少,一般每2～3天或更长时间排便1次(或每周少于3次)即为便秘。如该症状超过6个月即为慢性便秘。由于便秘是一种较为普遍 Constipation refers to the retention of stool in the intestine for too long, secret knot unreasonable, extended period of defecation, or the cycle is not long, but the stool dry discharge difficult, or fecal material is not hard, although the meaning, but not smooth disease. It is a symptom, not a disease. Usually reduce the frequency of defecation, usually every 2 to 3 days or longer defecation 1 (or less than 3 times per week) is constipation. If the symptoms more than 6 months is chronic constipation. Because constipation is a more common