A wind turbine blade protection structure for protecting a wind turbine blade from lightning includes at least one metal receptor disposed on a blade tip portion of the wind turbine blade such that at least a part of the at least one metal receptor is exposed on a surface of the wind turbine blade; a down-conductor extending along a blade longitudinal direction from the metal receptor to a blade root portion inside the wind turbine blade, the down-conductor being electrically connected to each of the at least one metal receptor; and a metal thin layer disposed so as to cover at least a part of the surface of the wind turbine blade, at least a part of the metal thin layer being electrically connected to the metal receptor. The metal thin layer disposed is arranged along the down-conductor in the blade longitudinal direction of the wind turbine blade.