General curative effect, anal deformation, anal resting pressure, anal maximal systolic pressure, postoperation complications ( leakage of gas and liquid, key-hole deformation) and recurrence of anal fistula were observed in the two groups after operation. 术后对两组病人的总疗效、肛门变形、肛管静息压和最大收缩压变化、并发症(漏气漏液、锁眼畸形)、肛瘘复发进行观察比较。