To address the critical demand for compatible low infrared emissivity and dual-band radar absorption,this study proposes a novel dual-band radar absorber with low infrared emissivity based on the metamaterial.The structure comprises an infrared stealth layer and a dual-band radar-absorbing unit. an infrared stealth layer and a dual-band radar absorbing unit.The infrared stealth layer is designed as a square metal patch array. The dual-band radar absorber consists of a resonant layer,a dielectric layer,and a metal reflector layer,with the resonant layer integrating an open square ring and a symmetrical eight-arm cross-diagonal pattern. The results show that the infrared emissivity of the novel structure is as low as 0.316 in the band of 3—14 μm,the effective absorption rates are 94.23 % and 99.94 % at 9.04 GHz and 14.67 GHz respectively,and the structure exhibits wide-angle stability.Furthermore,the absorption frequencies can be tuned through parameter optimization.The electric field,surface current and magnetic field at resonant frequencies are simulated to explain the dual-band absorption mechanism.This study provides new approaches and possibilities for the development of infrared and multi-band radar compatible stealth technology.