Anal stenosis after hemorrhoid surgery may be caused by improper surgical operation or adhesion of the scar after surgery. Anal stenosis after hemorrhoid surgery may be due to hemorrhoid surgery operation errors, damage to normal tissue caused by excessive anal stenosis; may also be due to the formation of postoperative scar tissue contracture caused by anal stenosis, mainly due to the adhesion of the scar around the anus. When anal stenosis occurs, anal dilatation can be carried out to gradually improve anal stenosis in a step-by-step manner, and stenotomy and other surgical procedures can also be carried out to treat the stenosis. Daily eat more food rich in dietary fiber, promote the discharge of stool, eat more vegetables and fruits, drink more water, adjust the diet structure, and develop good defecation habits, after the treatment should be regularly rechecked, so as to avoid the reoccurrence of anal stenosis. After hemorrhoid surgery, anal stenosis, need to actively seek medical attention, clear causes for targeted treatment, not delay, to avoid aggravation, affecting the health of the body.