To provide a traveling device of a traveling body capable of moving over a plurality of areas and performing transmitter and receiver of the signal between the control devices in respective areas.

A traverser 6 moves on a traveling path arranged over A room and B room where a storage shelf 2 and a passage T for storing/retrieving work are provided respectively, and a stacker crane 5 is transferred when the traverser positions at the directed passage T for storing/retrieving work. The device is provided with optical transmitter-receivers 54, 55 connected to the control device 51 respectively in the A room and the B room, and is provided with optical transmitter-receivers 56, 57 opposing to the respective optical transmitter-receivers 54, 55 in the traverser 6. Since the travel command directing the destination passage T for storing/retrieving work can be transmitted to the traverser 6 with the control device 51 through the optical transmitter-receiver, the occurrence of the problem that the traverser can not receive the command due to the condition of the room, can be avoided.