Automatic ligature is developed from the traditional ligature therapy of Chinese medicine in the motherland. The ligature is applied to the base of the mucosa on the hemorrhoid or hemorrhoids, and through the tightening and strangulation of the ligature, the blood supply to the hemorrhoid is blocked or the venous backflow is reduced, which reduces the congestion and hypertrophy of the hemorrhoid or the stagnation of the blood flow, causing ischemia, atrophy and necrosis, and the ligature tissue gradually falls off and the traumatic tissue is repaired and healed. It is one of the most effective treatment methods available. The whole process of ligation treatment is automated, time-saving, labor-saving, practical, easy, short time consuming, about 5-10 minutes, without anesthesia, and inexpensive. The pain is slight, complications are rare, no scar is left after the operation, the normal structure and appearance of the rectum and anal canal are not destroyed, and the effect on the internal hemorrhoid part of all stages of internal hemorrhoids and mixed hemorrhoids is significantly better. There are cases of premature detachment of the rubber ring, inability of complete necrosis of the hemorrhoid and postoperative bleeding after the ligature treatment. Automatic ligation is one of the most effective treatments among all treatments and is the preferred treatment in Europe and the United States. Since auto ligation is cheap, convenient, effective and painless, it will become the main method of hemorrhoid treatment in the future.