▎ 摘　　要

NOVELTY - The mask has a first cover body (10) covered on a mouth and nose position of a user. The second cover body (50) used for forming a detachable combination with an outer side of the former cover body through a combination structure. The latter cover body is provided with a first through hole (21). A position of the through hole is corresponded to an opening position and a second through hole (51) of the cover body. The cover body used for placing a filter sheet to filter pollutant when wearing the cover bodies. The filter sheet is made of petrochemical material, graphene and nano-inducer. USE - Mask with replaceable filter structure. ADVANTAGE - The mask has replaceable filter structure, so that the service life of the mask can be improved. The mask can effectively isolate the external environment, increase the external pollution substance into the mouth and nose when the user wearing the mask, and can effectively block the harmful gas, smell, and the purpose of flying the foam in and out of the user. The first cover body, the filter sheet, the second cover body and the belt are transparent or semi-transparent structure. The user can easily identify the face when wearing, when it is necessary to identify the identity, it needs to take off the mask and it is not good for using convenience and safety. The air inlet and exhaust of mask are through the gap of the material, lack of guide structure, which is easy to block the air flow, the user exhaled carbon. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the decomposition structure. First cover body (10) First through hole (21) Straps (40) Second cover body (50) Second through hole (51)