The invention provides a hydrogenation method for C-5 petroleum resin. The method comprises the steps of dissolving the C-5 petroleum resin in an organic solvent in a mixer, preheating, then enteringa fixed bed hydrogenation reactor, wherein the reactor is filled with a nickel-zinc series hydrogenation catalyst, performing after hydrogenation, sending the material to a stripping tower, refining the organic solvent extracted from the upper part by a rectifying column for recycling, and obtaining the C-5-hydrogenated petroleum resin at the bottom of the stripping tower. According the invention,the catalyst prepared by using a nickel-containing carrier with a specific crystal form can greatly improve the utilization rate of the active metal and reduce the difficulty of in preparing the catalyst, and the addition of the selected active component added plays a synergistic effect, and can be used for preparing the C-5 hydrogenated petroleum resin with a low bromine value, good color and stability.