A three-layer metamaterials absorber,with graphene-MIM-Al,is desig ned Based on the impedance matching principle and surface plasmon resonance (SPR) t heory,The finite-difference time-domain method was used to study and analysis t he absorber′s absorption spectra,electromagnetic field energy distribution and the design structure of the absorber.The results show that the absorber has fou r ultra-narrow band absorption peaks in near-infrared band,the maximum absorp ti on rate is 0.943,and the 3dB bandwidth is about 3.55μm.With the increase of t he thickness of the graphene layer,the four-channel absorption spectrum shifts t o the right and the absorption rate remains almost unchanged The four absorption peaks are insensitive to the height of MIM Structure,but the change of absorpt ion rate is obvious.When the height of MIM Structure is 110nm,the absorption r ate of adjacent three channels reaches the maximum.The multi-channel and ultra - narrow-band absorber provides a reference for high-precision sensing,function al imaging and three-dimensional storage applications.