Hemorrhoid surgery is not bowel surgery. There are many types of hemorrhoid surgery, including external stripping and internal ligation surgery and minimally invasive surgery, but they all belong to the anal area and the surgery is not bowel surgery. External Stripping and Internal Ligation Surgery is a traditional surgical procedure that requires bowel preparation prior to surgery. The surgery is performed under anesthesia, and after anesthesia, the external hemorrhoids are stripped away using scissors, and then ligature sutures are applied. Minimally invasive surgery is more commonly used is PPH surgery, which is a suprahemorrhoidal mucosal circumcision. The surgery requires the choice of general anesthesia to dilate the anus after which an anastomosis is placed and the mucosal circumcision is performed. Although hemorrhoid surgery is not a bowel surgery, some patients need bowel preparation, and bowel preparation can also avoid the situation of defecation immediately after the operation, and play a role in protecting the postoperative wound from irritation, contamination caused by bleeding, infection and so on.