PROBLEM TO BE SOLVED: To provide a wind selection device capable of improving wind selection performance by means of wind by diffusing and discharging sugar cane to an upper rear side after shredding the sugar cane in a chopping device.SOLUTION: A sugar cane harvester 1 includes on a crawler type travel device 10: a crop divider 2 diving culms a base cutter as reaping device a conveyance device 5 a chopping device 6 and a wind selection device 7, etc. The wind selection device 7 includes: a diffusion case 6b continuously arranged at a rear part of an exhaust port of the chopping device 6 a suctioning blower 7b arranged at an upper rear part of the diffusion case 6b and a diffusion rotor 18 arranged at a front lower part of the diffusion case 6b and rotating to throw up sugar cane.
