▎ 摘　　要

NOVELTY - The utility model claims a protective mask, comprising a mask body, the mask body is provided with a protective cover, the two ends of the protective cover are provided with ear; the protective cover is provided with a turning layer, capable of turning one end of the layer is provided with a built-in layer placing area; build-up layer placing area is provided with a built-in layer, top end and bottom end of the built-in layer placing area are provided with a second magic tape and the second magic tape provided with a breathing through hole area, the built-in layer placing area is provided with a built-in layer, top of the build-up layer placing area; the bottom and one side are provided with a first magic tape, the turning layer is provided with a turnover of ventilating layer, turning the top of the ventilating layer, the bottom and one side are provided with connectivity magic tape, two ends of the internal layer is provided with a built-in layer magic tape. The utility model has novel structure, simple operation, through the turning layer can be the internal layer sealed in internal layer placing area, at the same time improving purifying capacity of mask, for using next time it only needs to replace the build-up layer, life saving cost.