To provide a light and economical separable blade for a wind turbine that is also equipped with a lightning rod function.

This separable blade for a wind turbine wherein the blade 1 as a whole is assembled by connecting two electrically non-conductive part blades 1T and 1R in the longitudinal direction is provided, in the blade, with metallic fasteners 4, 5, 6, and 7 fastening together the two part blades connected to each other, and lightning protection conductive wires 8 and 9. The fasteners 4 are exposed on the blade surface of the part blade 1T, and are connected to the lightning protection conductive wire 9 through the other fasteners 5, 6, and 7, or the lightning protection conductive wire 8. The lightning protection conductive wire 9 extends to the blade root.