Abstract: A new kind of bimetallic biligand NBR hydrogenation catalyst with two ligands,tetramethylethylenediamine and phenylsulfide, was prepared in this work.The influence of catalyst，reaction temperature, time, pressure, and NBR concentrations on NBR hydrogenation were studied.The results showed higher selectivity, higher activity and lower cost of the catalyst. In addition, the stability of the bimetallic biligand catalyst was checked by a reaction equipment designed for kinetics measurement, and a longer life of this catalyst in air was achieved.The mechanical properties of HNBR product were with the commercial products of Bayer and Zeon.In conclusion, this kind of catalyst was perfect for NBR hydrogenation and of high practical value. In particular, the air stability of this catalyst was better than others.