Although most patients with hemorrhoids can be relieved after non-surgical treatment, there are still a small number of patients with severe hemorrhoid lesions, also known as severe hemorrhoids, which are ineffective after non-surgical treatment and have significant symptoms that seriously affect the quality of life, and should then receive surgical treatment as soon as possible. The advantages of this procedure are that it is simple and effective in treating single or relatively isolated internal hemorrhoids; the disadvantages are that only up to three hemorrhoids can be removed at a time and a certain mucosal bridge needs to be preserved, with a high recurrence rate after surgery, often accompanied by edema in the anus, significant pain and a long period of time, and slow healing of the wound, usually taking 3-4 weeks. If too much tissue is removed, postoperative anal incontinence or stenosis may occur. 2.Circumferential hemorrhoidectomy The advantage is that the hemorrhoid block is completely removed, and the recurrence rate is low after the operation, but the disadvantage is that the operation takes a long time, there is a lot of bleeding during the operation, and the postoperative complication rate is high. 3.Glue ring ligation treatment. At present, most of the automatic hemorrhoid ligation (Ruiyun Procedure for Hemorrhoids, RPH), mainly used for internal hemorrhoids, is through the special automatic hemorrhoid ligation device to put the rubber ring on the root of the hemorrhoid, so that it produces ischemia, atrophy, necrosis, fall off, the traumatic tissue repair and healing. The advantage is that it is easy to operate and less painful, but the disadvantage is that it cannot be used for the treatment of simple external hemorrhoids and mixed hemorrhoids. 4.Anastomosis of mucous membrane on hemorrhoid is mainly applied to prolapsed III-IV degree mixed hemorrhoids and circumferential hemorrhoids. According to the modern concept of hemorrhoids, i.e. pathological hypertrophy of anal cushion with downward migration. The principle of the operation is to reposition and restore the function of the displaced anal cushion through surgery. The essence of the surgery is to preserve the integrity of the anal cushion and to remove the mucosal tissue of the hemorrhoid through the circular anastomosis, so that the anal cushion can be moved upward and its anatomical position can be restored, while the end branches of the rectal arteries and veins are cut off, so that the blood supply of the hemorrhoid is reduced and gradually atrophied, achieving the effect of “lifting and cutting off the flow”. The operation time is short, the effect is obvious, the postoperative pain is light, the recovery is fast, and the complications are few. 5.Selective supra-hemorrhoidal mucosal resection is mainly suitable for non-circular prolapsed hemorrhoids of III-IV degree. Its advantages are reasonable preservation of the skin bridge and mucosal bridge, maximum maintenance of the fine sensation and contraction function of the anus, shortening the treatment time, and making hemorrhoid surgery more minimally invasive. Although hemorrhoids are the same disease, all people are different. Each patient’s hemorrhoid is at a different stage and has different clinical symptoms, so in order to achieve the best treatment effect, the doctor will weigh the pros and cons according to the different degrees of each patient’s condition and develop an individualized treatment plan, reflecting the concept of minimally invasive.