The invention provides an interference check device, an interference check method, and a machine tool having the interference check device, which easily can perform the interference check of one mover when a plurality of moving means are disposed for one movable body direction of the mover. The interference check device of the invention is provided with an interference check part and an absolute movement amount calculating part, wherein movable bodies as interference check objects and moving axis of each movable body are input the interference check part; according to an input result of the interference check part, a plurality of the moving axes enabling the same movable body to move in the same axis are arranged in the same movable body, a virtual axis synthesized by the movement amount of the plurality of moving axes is provided in the same axial direction as the plurality of moving axes and arranged in the absolute movement amount calculating part; and the interference check part performs interference check according to the movement amount of each moving axis and the absolute movement amount of the virtual axis.