A game-machine operation-member rotation structure 3 is provided in which an operation member 31 attached to a rotation shaft 34 supported so as to rotate is turned right and left, including: a moving body 352 which protrudes in the radial direction of the rotation shaft 34, rotates together with the rotation shaft 34 and moves freely in the axial direction; a spiral guide 36 which is concentric with the rotation shaft 34 and moves the moving body 352 in the axial direction as the rotation shaft 34 rotates; and a stopper which is disposed on a movement locus of the moving body 352.