Abstract: Ni-Co/La₂O₃ and Ni-Cu/La₂O₃ bimetallic alloy catalysts were prepared by using LaNi_0.9Co_0.1O₃ and LaNi_0.9Cu_0.1O₃ perovskite-type oxides precursors. The results demonstrate that the components are diluted with each other in the bimetallic alloy catalyst and exhibit strong anti-sintering ability. The carbon deposited on the catalyst surface mainly depends on the adsorption state of CO, the modulated adsorption state and adsorption strength of CO contribute to the strong anti-carbon deposition ability of the Ni-Co bimetallic catalysts. The Ni-Co bimetallic alloy catalysts show remarkable activity, selectivity, and stability in the CO methanation reaction.