In the reverse water-gas shift（RWGS） reaction,the Cu oxide catalyst is easily deactivated at high temperature,but the transition metal carbide has the function of dispersing and stabilizing Cu particles.Cu/β-Mo,2,C catalysts with 1% and 3% Cu loads（mass fraction,the same as below） were synthesized using ammonium heptadolybdate（AMT）,hexamethyltetramine（HMT） and copper nitrate as materials by one-step temperature programmed carbonization method.The catalysts were characterized by XRD,H,2,-TPR,SEM and HRTEM.The results show that the addition of Cu directly weakens the characteristic diffraction peak of β-Mo,2,C,indicating strong interaction between the metal and the carrier.The low Cu loads was uniformly dispersed as 5 nm nanoparticles on β-Mo,2,C carrier with more active centers.The CO,2, conversion rate and CO selectivity of 1%Cu/β-Mo,2,C catalyst at 600℃ are 51.00% and100%,respectively.The apparent activation energy is 24.69 kJ/mol,lower than 3%Cu/β-Mo,2,C,showing good activity and stability.It has been confirmed that 1%Cu/β-Mo,2,C has good catalytic performance and is a potential high efficiency catalyst for RWGS reaction.