Anal fistula surgery commonly used position can choose truncated position, lateral position, etc., does not necessarily have to pose truncated position. Anal fistula is one of the common anorectal diseases, because the perirectal abscess breaks down after a long time to form a granulation tissue pipe connected to the outside world, clinically manifested as itching, pus flow, pain and other symptoms. Anal fistula surgery is one of the effective means of solving the anal fistula disease, and its position placement includes two kinds of lithotomy position and lateral lying position. 1. The lithotomy position has good intraoperative visual field exposure and is more comfortable for the patient, but it also has many defects, such as longer time for position placement, more intraoperative bleeding, and a strong sense of shyness in female patients. 2. Side lying position is convenient and time-consuming, full relaxation of the muscles of the whole body, full exposure of the intraoperative field of vision, less shyness and other advantages, compared with the amputation position, the side lying position has a lot of advantages that can not be replaced. It is recommended that patients with anal fistula once diagnosed, timely to regular hospitals, under the guidance of professional doctors to give treatment; specific surgery to take the position of the operation, according to the needs of the condition and the doctor’s recommendations, in accordance with the doctor’s advice, the implementation of the operation is conducive to the smooth success of the operation, so as not to delay the condition.