To provide a comb blade for thinning scissors provided with the element of the blade of thinning scissors having a new shape, and its manufacturing method.

For the comb blade for the thinning scissors, a blank to be the original form of the comb blade is prepared, the surface of the blank is machined, and cutting of the element of the comb blade and working of the end are automatically performed using a grinding stone. The thickness of a blade on one side holding a recessed groove 6 for holding thinning hair there between formed at the end of the elements 2 of the respective comb blades is made thinner than the other.