Anal stenosis after hemorrhoid surgery can generally be treated with anal dilatation, which mainly includes manipulative anal dilatation and instrumental anal dilatation. Anal stenosis is a common complication after hemorrhoid surgery, for the anus or anal canal mild narrowing, generally can be treated by expanding the anus, can be by the physician’s finger finger sleeve, coated with liquid paraffin and other lubricants, slowly penetrate into the patient’s anus and the anal canal, gently to the anal canal around the pressure to the anal canal for the manipulation of the expansion of the anus, or with anoscope, the expansion of the anus and other instruments for the expansion of the anus. In addition, for those who have poor results in anal dilatation treatment, if necessary, according to their own situation, under the advice of the physician to choose surgical treatment, that is, once again for the anal sphincter of the lateral incision surgery, in order to achieve the purpose of anal dilatation.