A relay transport device configured to relay and transport a medium fed from the feeding device to the recording device includes a first restriction section having a first restriction surface configured to position one first edge of the medium in a width direction of the medium fed from the feeding device; a transport section configured to transport the medium toward the first restriction surface; a first auxiliary guide disposed downstream of the first restriction section in the transport direction and having a first auxiliary guide surface configured to restrict a position of the first edge of the medium; and a second auxiliary guide disposed on an opposite side from the first auxiliary guide with the medium interposed therebetween and having a second auxiliary guide surface configured to restrict a position of a second edge of the medium on the opposite side from the first edge.