The utility model discloses a retractor for surgery who belongs to medical instrument technical field. Be equipped with pole fixation clamp and drag hook head fixation clamp on the fixed head, pole fixation clamp fixed link rod, the drag hook head is fixed to drag hook head fixation clamp, a plurality of connecting rod fixed connection form the drag hook circle, the end -to -end connection pole that the drag hook circled links to each other with the brace table. The utility model discloses a retractor for surgery adopts the mode of pole fixation clamp fixed link rod and the fixed drag hook head of drag hook head fixation clamp, and the drag hook head is dismantled easily on the whole very much, has increased the flexibility of using, and hook rod sets up to flat pole and cockscomb structure pole, can distinguish the drag hook head that uses different positions very easily in the operation, and second inflection portion sets up soft part, has avoided the damage to operation skin to can protect from infection.