功能性便秘 (functionalconstipa tion ,FC)占小儿便秘的 90 %以上。其诊断标准为大便次数减少、排便困难和大便干燥、硬结 ,患儿生长发育正常 ,无全身疾病。以往治疗不针对临床分型多以泻剂为主 ,但药物的副作用越来越被人们重视 ,而且远期疗效不满意。目前该病的病因及发病机 Functional constipation (FC) accounts for more than 90% of pediatric constipation. The diagnostic criteria for the reduction of stool frequency, defecation and stool dry, induration, children with normal growth and development, no systemic disease. In the past, the treatment did not focus on laxatives for clinical classification, but more and more attention was paid to side effects of drugs, and the long-term efficacy was not satisfactory. The current etiology and pathogenesis of the disease