▎ 摘　　要

NOVELTY - The utility model relates to the technical field of filtering nonwoven fabric especially a multi-layer filtering nonwoven fabric, comprising a non-woven fabric surface layer; nonwoven fabric base layer and an edge edge sealing layer and a reinforcing supporting grid sheet; the periphery of the non-woven fabric surface layer and the nonwoven fabric layer is provided with an edge sealing layer; the inner centre of the non-woven fabric surface layer and the nonwoven fabric layer is provided with a reinforcing supporting grid sheet; the top part of the reinforcing supporting grid sheet is provided with a first graphene non-woven fabric layer; the top part of the first graphene nonwoven fabric provided with a first oil absorbing cotton layer; the top part of the first oil absorbing cotton layer is provided with a first nonwoven fabric layer; the whole structure is simple with multi-layer filtering and nonwoven fabric composite structure and built-in reinforcing supporting structure; it is convenient for efficient adsorption filtering and sterilizing and filtering; with double-side same filter structure; it is convenient to filter the whole nonwoven fabric without positive and negative differentiation installation and use and high stability and practicability; it has a certain popularization value.