A shot processing apparatus in which a projection machine projects projection media onto a workpiece. The shot processing apparatus includes plural hanger transport devices and a control unit. The hanger transport devices are each, in a hanging state of a member on which a workpiece is set or a hanging state of a workpiece, capable of moving along a guide path inside the shot processing apparatus and capable of stopping. The hanger transport devices are also capable of providing self-identifying identification information. The control unit controls the hanger transport devices by outputting to each of the plural hanger transport devices a control signal appropriate to each of the hanger transport devices. This control is based on the identification information provided from each of the individual hanger transport devices and based on information related to each of the individual hanger transport devices stored in advance in association with the identification information.