肛瘘是一种常见病、多发病,占肛门疾病的30％,仅次于痔。多见于20～40岁的青壮年。过去对复杂性肛瘘都是采取高位挂线、低位切开及支管全部切开的方法治疗,组织损伤多,病人痛苦大,创面愈合慢、疤痕多,疗程长。我们根据肛瘘的发生原因和演变机理,采取“主管挂线,支管旷置”的方法,成功地治疗了15例复杂性肛痿,现总结如下: Anal fistula is a common disease, frequently-occurring disease, accounting for 30% of anus diseases, second only to hemorrhoids. More common in 20 to 40-year-old young adults. In the past complex anal fistula is to take the high hanging line, low incision and branch all cut open method of treatment, tissue damage and more painful patients, wound healing slow, more scars, long course of treatment. According to the causes and evolution mechanism of the occurrence of anal fistula, we adopted the method of “supervising the hanging of the line and branchage of the tube” and successfully treated 15 cases of complicated anal impotence and summarized as follows: