The invention provides a catalyst for an alkyne hydrogenation reaction. The catalyst comprises a gold-palladium bimetallic nanomaterial and a ZIF metal organic framework material coated on the surfaceof the gold-palladium bimetallic nanomaterial. The invention also provides a preparation method of the catalyst, and the method comprises the step of performing a reaction on the gold-palladium bimetallic nanomaterial, imidazole compounds and a zinc source in a solvent so as to obtain the catalyst for the alkyne hydrogenation reaction. Through coordination of central zinc metal ions with the imidazole compounds, coating on the surface of the gold-palladium bimetallic nanomaterial is achieved so as to prepare the catalyst with the metal organic framework material-coated bimetallic nanomaterial; and the catalyst is applied to photo-driven alkyne hydrogenation reactions, and exhibits excellent hydrogenation activity and excellent selectivity to olefin products.