To provide thinning scissorss for easily performing three-dimensional hair cut.

In thinning scissorss 1, a first scissor half part 2 provided with a first edge part 2a and a second scissor half part 3 provided with a second edge part 3a are combined by a pivot 10. Moreover, the first edge part 2a of the first scissor half part 2 comprises a first comb edge 4 positioned on the front side and a first rod edge 5 positioned on the rear side, and the second edge part 3a of the second scissor half part 3 comprises a second rod blade 6 positioned on the front side and engaged with the first comb edge 4 and a second comb blade 7 positioned on the rear side and engaged with the first rod edge 5. As for the thinning scissorss 1, the first scissor half part 2 and the second scissor half part 3 are used as moving edges and both sides are usable.