(DG-HAL) Ultrasonic Doppler-guided submucosal rectal artery ligation, (RPH) automatic ligation and sclerotherapy injection: I. [Brief description] DG-HAL is one of the minimally invasive hemorrhoid treatment methods integrating ultrasonic exploration and suturing, which is the so-called “no-knife hemorrhoid treatment”. Lu Jie, Department of Anorectal Medicine, Nantong Hospital [Features] The artery supplying the hemorrhoid is ligated in a high, accurate and selective manner. The unique anoscope can be equipped with a side-viewing Doppler ultrasound probe, and through the guidance of Doppler ultrasound, the submucosal arteries from above the anus near the anal canal can be identified, and at the same time, these arteries can be sutured or ligated through the window located above the Doppler ultrasound probe. [Advantage] 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 shrink, while bleeding and pain will be relieved. As the tension decreases, the connective tissue will also regenerate, thus promoting shrinkage of the hemorrhoid. The procedure is non-incisional, with minimal discomfort, no removal of hemorrhoidal tissue, no trauma, and no medication changes. It is a minimally invasive surgical procedure with low damage, suitable for those who are too old and weak to tolerate surgery, and can relieve symptoms such as bleeding. [Although DG-HAL is a relatively new technology for patients with surgically intolerant hemorrhoids, it is not “better without a knife than with a knife” like a martial arts master. The long-term efficacy of DG-HAL has not been further summarized. Second, RPH (automatic hemorrhoid ligation) was evaluated by our academic committee and became one of the selective treatment programs in anorectology. The anorectal programs that passed the evaluation at the same time are PPH (anastomotic suprahemorrhoidal mucosal loop) and DG-HAL (Doppler-guided hemorrhoidal artery ligation). As an elective treatment for hemorrhoids, the Department of Anorectal Medicine will strictly control the clinical indications and apply them in clinical practice [Advantages] The ligature treatment saves time, effort, practicality, simplicity, and can be performed by one person alone, and takes only 5-10 minutes. Internal hemorrhoids (stage 1 to 3 is good); internal part of mixed hemorrhoids; RPH can be used as a complementary treatment for incomplete retraction of hemorrhoids or anal cushions after PPH or other therapies; other: focal lesions of the rectum [contraindications] simple external hemorrhoids; external part of mixed hemorrhoids; enlarged anal papillae Rectal polyps with suspected malignant changes [Evaluation] mainly for the treatment of hemorrhoids below stage III mainly internal hemorrhoids, easy to treat and faster recovery, but the long-term efficacy is inferior to that of surgical treatment. Third, sclerotherapy injection, currently carried out including the four-step injection of elimination hemorrhoid spirit and the newly developed foam sclerotherapy injection.