Face recognition technology is one of the hottest fields today,under the special circumstances of this year's epidemic,it is our common responsibility to wear masks when going out.In order to realize the real-time detection of faces wearing masks,a face recognition algorithm with masks based on YOLOv3 is proposed.Use YOLOv3 algorithm to improve the recognition speed,capture and recognize the target image in the OpenCV environment.In this paper,the system has been experimentally verified,and the screening accuracy is 95.5%,and the dynamic detection speed is up to 27 frames per second,which meets the real-time detection standard.