There are two main ways for postoperative hemorrhoid patients to prevent anal contraction: first, to keep the bowels clear and prevent constipation, because constipation will always produce the urge to poop, thus stimulating the anus to produce contraction. Therefore, hemorrhoid patients need to pay attention to diet after surgery, eat more vegetables, fruits and other coarse fiber food, avoid spicy, stimulating food, if necessary, you can take oral stool softening drugs to assist defecation. Second, you can use warm water or potassium permanganate solution according to the quality of 1:5000 ratio sitz bath, sitz bath can relax the muscles around the anus, effectively relieve sphincter spasm, and sitz bath can also clean the wound, promote wound healing. After hemorrhoid surgery, patients should go to the hospital regularly to change the medicine, and follow-up incision healing.