▎ 摘　　要

NOVELTY - Absorbing composite material comprises impedance matching layer as an upper layer and a main absorber layer as an intermediate layer. The absorber layer comprises a three-dimensional graphene absorbing material and electromagnetic loss layer as the bottom layer. The impedance matching layer is connected to the electromagnetic loss layer by a connection that can adjust the distance between the two layers while sandwiching the main body absorber layer between the impedance matching layer and the electromagnetic loss layer. USE - Used as absorbing composite material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the absorbing composite material, comprising impedance matching layer is connected to the electromagnetic loss layer, and a main body absorber layer is sandwiched between the impedance matching layer and the electromagnetic loss layer,preparing an absorbing composite material. The main body absorbing layer comprises a three-dimensional graphene absorbing material.