A new self-service surgical retractor with the characteristics comprising: main post (1), lock sleeve (7), lock operating lever (11), take-up device lock sleeve (15), take-up device (17) and hook plate (22). The lock sleeve (7) is covered on the lower part of the main post (1) to form a dovetail groove; the lock operating lever (11) is spun on the main post (1) through the thread; the take-up device lock sleeve (15) is spun on the upper part of the main post (1) and locks and fixes the inserted link (18) of the take-up device (17) on the upper end of the main post (1); the take-up device (17) is connected with the hook plate (22) through the retraction tape or rope (21). With simple structure and low cost, the present invention is easy to manufacture and use.