▎ 摘　　要

NOVELTY - The utility model claims a high-efficiency filter-type protective mask, comprising a mask main body; the front end face of the mask main body is provided with a breathing valve; the inner surface of the back of the mask main body is provided with a magic tape female surface; the back end surface of the magic tape female surface is provided with a magic tape surface; the back end surface of the magic tape is provided with a sponge strip; the back end surface of the mask main body is uniformly provided with three clamping grooves; the inner side of the clamping groove is movably connected with a clamping block; the back end surface fixedly connected with the clamping block is fixedly connected with, three of the clamping block outer surface opposite to one side fixedly connected with the filter core; the filter core is orderly provided with an active carbon filter layer A, a superfine fibre filter layer, a graphene layer and an active carbon filter layer B from front to back. The utility model has good filtering effect, and it is convenient to replace the filter core, improves the service life of the mask main body, and ensures the filtering effect.