The post-operative incision of hemorrhoid surgery is open and the scar will be bigger after healing. Some post-operative scars will lead to anal stenosis, so you need to ask for anal dilation treatment in time to prevent the occurrence of anal stenosis. In case of hospitalization, the dilation treatment is usually performed by a doctor. Before dilation, you should take a sitz bath with warm water to relax the sphincter around the anus and then fully lubricate the anus. The doctor will first enter a finger to try the tightness of the anus. After the anus is relaxed, the number of fingers entered will be increased one by one. Anal dilation is usually performed 3-4 times a week for about 15 minutes each time. If the patient is already discharged from the hospital and needs to buy his own dilation stick, he should take a sitz bath to clean the incision before dilation, and then he should use the dilation stick, increasing the number of times and the duration of dilation from fine to coarse, the same as the doctor’s dilation times and duration. If the anal incision is completely healed and there is no anal stricture, there is no need to continue dilation. If there are still symptoms of anal stricture, it is necessary to continue the dilation treatment.