1, hemorrhoids is the most common benign rectal and anal canal disease, in our anorectal disease, hemorrhoids incidence accounted for 80.6%, since 1975 Thomson first proposed “hemorrhoids is a normal anatomical structure for everyone, in the lower end of the rectum lip-like flab or anal cushion, the pathological hypertrophy of the anal cushion is hemorrhoids”. This new concept has been supported and recognized by many scholars. Based on the above theory, most scholars now believe that the “anal pad” is a part of the normal anatomy of the rectum and anus, and exists universally in all ages, men and women, and in all races. Only when combined with symptoms such as bleeding, prolapse, pain, and impaction can they be called “hemorrhoids”. 2, internal ligation and external incision as a classic procedure for treating hemorrhoids, its operation is simple, the effect is remarkable, and is still one of the basic procedures for treating hemorrhoids at home and abroad. However, the removal of the hemorrhoid nucleus is more, and the function of the dentate zone is damaged to varying degrees. The dentate area is the evoked area of the defecation reflex, and there are highly specialized sensory nerve endings. When feces reaches the anal canal from the rectum, the nerve endings receptors in the dentate zone are stimulated, which will reflexively cause the internal and external sphincter muscles to relax and the levator muscle to contract, causing the anal canal to dilate and feces to be expelled. When the dentate area is damaged, the defecation reflex is weakened, and different degrees of sensory anal incontinence and constipation will occur; moreover, due to excessive skin and mucous membrane removal, excessive scarring after healing will easily cause anal stenosis; pain is an inevitable symptom of postoperative complications, and it is especially obvious if there are more incisions and large nerve stimulation. Traditional MM surgery has a variety of common postoperative complications as mentioned above, which bring great mental and physical harm to patients and promote the current great development of hemorrhoid treatment procedures by anorectal surgeons. The ligature method evolved from the traditional ligation. At present, ligation is still the main non-surgical treatment for internal hemorrhoids. There are two methods of hemorrhoid ligation, namely the traditional “basal ligation of the hemorrhoid nucleus” and the modified “suprahemorrhoidal mucosal ligation”. The traditional internal hemorrhoid ligation method is based on the principle that the base of the internal hemorrhoid can be ligated by means of a rubber ring, and the strong elasticity of the rubber ring can be used to block the blood supply of the internal hemorrhoid, causing ischemia, necrosis, and dislodgement of the internal hemorrhoid, as well as the proliferation of local fibrous tissues and the formation of scarring, which can achieve the purpose of fixing the surrounding tissues. Its common complications are bleeding, pain, swelling, edema, and difficulty in urination. “Suprahemorrhoidal mucosal ligation”. The suprahemorrhoidal mucosal ligation method is to replace the ligation site with a ligation of the normal mucosa at the lower end of the rectum above the root of the inferiorly displaced anal pad. The formation of hemorrhoids was previously thought to be due to dilatation or varicosity of the rich venous plexus in the lower rectum or anal canal, but modern medical anatomical studies have found that dilated veins do not have any pathological damage and are a normal physiological phenomenon. In summary, the current surgical option for hemorrhoids, the traditional procedure MM, has been tested in practice for decades and still plays an important role. However, the postoperative complications of this procedure, such as sensory bowel incontinence, anal pain, incisional edema, bleeding during denudation, and urinary retention, add to the physical pain as well as the financial burden of the patient. Therefore, our department has designed the automatic hemorrhoid ligation combined with external hemorrhoid surgery to treat hemorrhoids, taking advantage of the ligation method and avoiding the disadvantages of surgical operation in the “sensitive area” at the dentate line.