▎ 摘　　要

NOVELTY - The valve has a breathing valve casing which comprises a breathing valve outer cover (1), a breathing valve inner cover (2) and a lysozyme atomizing device. A mounting groove (13) is provided on the side of the atomizer holder (10) close to the breathing valve outer cover, the microporous atomizer (9) is fixed in the mounting groove, and the middle portion of the mounting groove is provided with a mist outlet (14). A lysozyme liquid bottle (8) is arranged on the side of the microporous atomizer away from the atomizer holder, and a power control assembly (12) is pasted on the lysozyme liquid bottle. The power control assembly is electrically connected to the microporous atomizer, and the graphene filter membrane is arranged on the side of the atomizer holder away from the microporous atomizer. USE - Breathing valve for mask (claimed). ADVANTAGE - The breathing valve is applied to the mask, so that the virus killing and protection ability of the breathing valve mask is improved. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the breathing valve. Breathing valve outer cover (1) Breathing valve inner cover (2) Lysozyme liquid bottle (8) Microporous atomizer (9) Atomizer holder (10) Power control assembly (12) Mounting groove (13) Mist outlet (14)