The tail gas hydrogenation catalyst supplied by our company is used in the claus tail gas hydrogenation process of sulfur recovery units in the fields of petroleum refining, petrochemical and coal chemical industry. Claus tail gas hydrogenation catalyst with modified Al2O3 as the carrier and cobalt and molybdenum as the active metal components. The active components of the catalyst are evenly distributed, with large pore volume and specific surface area. The catalyst has good hydrogenation activity, low temperature hydrogenation activity and organic sulfur hydrolysis activity, good activity stability and long service life.