To provide a delivery device and a delivery system capable of conducting a smooth delivery method.

When an erection girder 120 supported by delivery carriages is erected from a bridge pier to the other bridge pier by the travelling of the delivery carriages 111, 112, a front end side of the erection girder 120 is supported by the side of the latter bridge pier. The delivery device 1 comprises a heavy load supporting mechanism 2 supporting the erection girder 120 and a sliding mechanism 3 moving the heavy load supporting mechanism 2 in a lateral direction crossing the delivery direction of the erection girder 120.