This paper proposes a reflective vest detection algorithm for apron staff based on prior knowledge and improved YOLOv3 algorithm. Aiming at the problem of the existing target detection method with low speed. the reflective vest detection candidate region is generated based on prior knowledge to replace the initial candidate region. so as to reduce the detection area. https://www.jmannino.com/deal-alert-Sink-Front-Polymer-Tip-Out-Trays-with-Hinges-flash-find/