The electrically, thermally and magnetically triple-controlled double-band absorber based on hybrid gold, graphene and InSb configuration is proposed in this paper. The results indicate that the absorption rate of double-band absorber can reach 95% based on the bright-bright mode coupling between gold nanorods. The physical absorption mechanism can be analyzed theoretically by the radiating two-oscillator (RTO) model and electric field intensity distributions at the absorption peaks. Moreover, the absorption frequency and absorption rate of the absorber can be electrically tuned by changing the graphene chemical potential, and thermally and magnetically tuned by changing the InSb temperature and the magnitude of the external magnetic field. Finally, the impacts of parameters on the absorption performances and the possible uses of the double-band absorber as a refractive index sensor are further discussed. This work provides a theoretical basis for the designs of dual-tunable absorbers and sensors.