Low anal fistula fecal incontinence may be due to surgical damage to the anal ring, resulting in damage to the anal sphincter, making it difficult to control bowel movements. The treatment of anal fistula is based on surgery, low anal fistula fistula below the anal ring, the anal ring is composed of the internal and external anal sphincter and the anal raphe muscle, there is a role in controlling the anus. High anal fistula surgery, need to pay attention to the preservation of the anal sphincter, surgical treatment to take hanging wire therapy. Low-level anal fistula does not need to hang wire treatment, surgery, if damage to the anal ring, it may lead to patients with fecal incontinence. However, the low anal fistula surgery will not cut off the anal ring, the operation is safer, generally rarely have fecal incontinence. Low anal fistula patients have incontinence, can be timely anorectal consultation, by the doctor after examination to further clarify the cause of the disease, targeted treatment.