▎ 摘　　要

NOVELTY - The utility model claims an electrostatic spinning nanometer fibre filtering film, comprising a film supporting layer, a coarse filter layer, a first nanometer fibre filtering layer, PVDF electro-spinning fibre film layer and the second nanometer fibre filtering layer; the upper surface of the membrane supporting layer is provided with a rough filter layer, the upper surface of the thick filter layer is provided with a first nanometer fibre filtering layer, the upper surface of the first nanometer fibre filtering layer is provided with a PVDF electro-spinning fibre film layer, upper surface of the PVDF electro-spinning fibre film layer is provided with a second nanometer fibre filtering layer; the thick filter layer is rough fibre whose average diameter is 800~1200 nm and average diameter of 100~200 nm fine fibre interwoven, coarse fibre and fine fibre is attached with graphene oxide. said structure has multi-stage filtering effect, high filter efficiency, small air resistance and long service life.