The invention relates to an Ni-SSZ-13 catalyst, a preparation method and application thereof, and mainly solves the technical problems that the preparation cost of an SSZ-13 material in the prior art is expensive, the supported nickel metal diffusion is nonuniform and a methanol-to-olefin catalyst is low in stability and low in catalytic activity. The Ni-SSZ-13 catalyst is prepared from the following components in parts by weight: (1) 0.1 to 20 parts of Ni or an oxide thereof; and (2) 80 to 99.9 parts of an SSZ-13 molecular sieve. The Ni-SSZ-13 catalyst preferably solves the problem, and can be used in industrial production of hydrogenation, hydrocarbon pyrolysis and methanol-to-olefin.