Ultrasonic Doppler-guided hemorrhoid artery ligation is a new minimally invasive treatment for hemorrhoids, a new treatment technique that integrates ultrasonic exploration and stitching surgery. This technique is non-invasive, minimal discomfort, no removal of hemorrhoid tissue, no trauma, no post-operative complications, and at the same time preserves the anal lining tissue intact while treating hemorrhoids, keeping the original self-control of the anus unaffected and effectively avoiding many complications and serious sequelae easily caused by other treatment methods. This world-leading technology is a new type of hemorrhoid surgery carried out in Japan, Europe and the United States, and is rated by the industry as an “era-creating surgical method in the history of hemorrhoid treatment”. “The DG-HAL hemorrhoid artery ligation procedure combines ultrasound exploration and suturing surgery, and the essence of the procedure is the high, accurate and selective ligation of the artery supplying the hemorrhoid. The unique anoscope can be fitted with a side-viewing Doppler ultrasound probe, and through the guidance of the Doppler ultrasound, the submucosal arteries from above the anus near the anal canal can be identified, and these arteries can be sutured or ligated through the window located above the Doppler ultrasound probe. The entire procedure is judged by the arterial Doppler ultrasound display, and since no venous return is compromised, the inflow/outflow ratio will be reduced at the same time. As a result, the hemorrhoid will dislodge, and the bleeding and pain will disappear. As the tension decreases, the connective tissue will also regenerate, thus promoting shrinkage and shedding of the hemorrhoid. The procedure is non-invasive, minimal discomfort, no removal of hemorrhoidal tissue, non-invasive, no post-operative complications, no impact on anal function, safe and effective, and a minimally invasive surgical procedure for ultra-low damage.