The invention discloses a catalyst for selective hydrogenation of alkynol, and a preparation method and application thereof. The catalyst comprises a carrier and an active ingredient, wherein the active ingredients comprise an alloy phase formed by Pd and Pd-Zn; the carrier is ZnO coated by nitrogen doping carbon materials. When the catalyst is used for hydrogenation reduction of C5-C20 chain alkynol, high conversion rate and high selectivity are realized; the catalyst can be used in the synthesis process of vitamin E, carotenoid and spice.