After hemorrhoid surgery as the wound heals it is easy to trigger the phenomenon of anal stenosis, so you need to carry out immediate to dilation treatment, dilation needs to be divided into the following steps: 1, the use of potassium permanganate lotion or saline to clean around the anus to prevent bacterial infection around the anus. In addition, a sitz bath can also be used to achieve the goal. 2. Have the patient adopt a lying position with the buttocks elevated and massage the area around the anus adequately. The massage should last for about 15 minutes to relax the tissues around the anus and avoid tension in the anal sphincter. 3. Insert the index finger with a finger sleeve into the anus and slowly move it to open the anus. Special attention should be paid to the fact that the number of anal expansion should not be too frequent, but should be maintained at about 4-5 times a week.