目的　研究治疗中低位肛门直肠畸形的简便易行疗效好的手术方法。方法　设计了经会阴前大W肛门肛管成形手术 ,用于治疗中低位肛门闭锁病人 ,包括有瘘 (会阴瘘、前庭瘘、阴道瘘、尿道瘘、会阴前肛门、肛门狭窄 )和无瘘病人。结果　 40 / 42例伤口愈合好 ,首例术后早期会阴前纵切口裂开 ,中期 1例因感染整个切口裂开 ,延期愈合。绝大部分住院期间排便即恢复正常 ,全组无肛门失禁发生。结论　经会阴大W肛门肛管成形术是一种治疗中低位肛门直肠畸形的简便易行、疗效肯定的手术方法 Objective To study a simple and effective surgical method for the treatment of low anorectal anomalies. Methods The perineal large W anal ano-intoplasty was designed to treat patients with low to medium anal atresia including fistula (perineal fistula, vestibular fistula, vaginal fistula, urethral fistula, perineal anus, anal stenosis) and fistula-free patients . Results 40/42 wounds were healed well. The first case was followed by a long-term peritoneal incision in the early postoperative period. In the middle stage, one case was split open due to infection and delayed healing. The vast majority of defecation during hospitalization returned to normal, the whole group without anal incontinence. Conclusion The perineal large W anal anal angioplasty is a simple and effective treatment of low anorectal anomalies, the curative effect of certain surgical methods