The invention relates to a wind-power-grade bi-component epoxy adhesive and an application thereof. The wind-power-grade bi-component epoxy adhesive is formed by a component A and a component B, wherein the weight ratio of the component A to the component B is (2-2.5):1. The component A comprises carbon fibers and nanometer whiskers; the component B comprises mixed-amine curing agent, wherein the mixed-amine curing agent comprises macromolecule polyether amine with the weight percentage of 5%-10% based on the total weight of the mixed-amine curing agent. As the wind-power-grade bi-component epoxy adhesive has the high shear strength, the high peel strength, the fatigue resistance and the impact resistance of a wind-energy-blade structural adhesive, and further has the high breaking elongation rate, the use requirement of binding of large composite material structures can be fully met, and the wind-power-grade bi-component epoxy adhesive is particularly suitable for serving as a wind-energy-blade mold assembling adhesive.