After having hemorrhoid surgery, it is best not to defecate for 24 hours because after the surgery there will be ligated hemorrhoids, to do a good job of preventing prolapse, which can cause hemorrhoid edema impaction or bleeding. First, there will be a wound present after hemorrhoid surgery, and it is best not to defecate for 24 hours to prevent contamination of the wound. Secondly, 24 hours after the surgery, you should make sure that your bowels are clear, and it is best to eat coarse fiber foods that can make your bowels form and reduce the number of bowel movements. Then again, you should take a sitz bath with potassium permanganate after the bowel movement, 3-4 times a day, for about 15 minutes each time, paying attention to the length of time. To sum up, if you have a situation after hemorrhoid surgery, you must go to the hospital in time for examination to identify the cause of the disease in time for symptomatic treatment.