Hemorrhoids is a very common disease, folk “ten people nine hemorrhoids”. There are more methods to treat hemorrhoids in Chinese and Western medicine, including injection, withering hemorrhoids, laser, cryotherapy and surgical excision, etc. On the basis of the traditional methods, the Department of Anal and Intestinal Medicine of our hospital has introduced international advanced equipment to further enrich the treatment means and carried out minimally invasive surgeries, such as ultrasonic Doppler localization of hemorrhoidal artery ligation (DG-HAL), to treat hemorrhoids. In 1995, Morinaga reported a new method of treating hemorrhoids, hemorrhoidal artery ligation (HAL), which is a new method of hemorrhoidal treatment at home and abroad. It utilizes a specially developed side-viewing Doppler ultrasound probe, which is guided by Doppler ultrasound, to identify the submucosal arteries originating from above the anus near the anal canal. Simultaneously, these arteries are sutured or ligated through a window located above the Doppler ultrasound probe. After successful ligation of the arteries, the blood supply to the hemorrhoids is reduced, the hemorrhoidal nuclei begin to crumple, both bleeding and pain are significantly relieved, and hemorrhoidal prolapse is significantly improved. After the tension in the hemorrhoidal lesion is reduced, the connective tissue therein begins to regenerate, which further promotes the contraction of the hemorrhoidal nucleus, and ultimately the hemorrhoidal prolapse disappears. The procedure is quick and easy to perform, minimally invasive, low-risk, with little intraoperative blood seepage, no serious complications or sequelae, and is a low invasive procedure. Post-operative treatment time is short with minimal pain due to the absence of open wounds, and post-operative hospitalization is 2-3 days. Ultrasound Doppler localization of hemorrhoidal artery ligation is suitable for I-IV degree hemorrhoidal disease, especially internal hemorrhoids with bleeding as the main symptom, and it can be used alone or combined with traditional surgery. Due to its minimally invasive and minimally painful nature, Ultrasound Doppler Ligation of Hemorrhoidal Arteries will be one of the most ideal hemorrhoidal treatments available today, and is a safe alternative for hemorrhoidal patients with other underlying medical conditions. The technical advantages of ultrasound Doppler-guided hemorrhoidal artery ligation 1, a large number of clinical applications in Europe and the United States have proved that the risk to the patient and the doctor is low, minimally invasive, painless, and the operation time is short, and it usually takes only 10-20 minutes to complete the operation. 2.Compared with conventional hemorrhoidectomy, Doppler-guided hemorrhoidal artery ligation has a small traumatic surface and a fast recovery speed, and normal activities can be resumed in a short period of time. 3.After successful ligation of the artery, the blood supply to the hemorrhoids is reduced and the hemorrhoids begin to shrink so that both bleeding and pain symptoms can be effectively controlled. 4.After the tension in the hemorrhoidal lesion is reduced, the connective tissue therein begins to regenerate, which in turn further promotes hemorrhoidal shrinkage and ultimately achieves the desired therapeutic effect. Of course, any surgical procedure has certain indications, this surgical procedure is mainly suitable for internal hemorrhoid bleeding mainly patients, for external hemorrhoids obvious internal hemorrhoids larger prolapse of the patient, the need for conventional surgical treatment, not to achieve the purpose of minimally invasive, there is also the long-term recurrence rate of this surgery to be further observed. In addition to the need for a more than two thousand yuan of disposable surgical equipment, treatment costs slightly higher than traditional surgery.