[Problems] A conveyance system and a conveyance control method are provided that can achieve at least one of the following: enabling the continuation of conveyance operation when not detecting any guide line, and discovering the abnormality that the automated guided vehicles fail to detect any guide line.
[Solution] A conveyance system comprising a conveyance vehicle that conveys an object to be conveyed and a control device that controls operation of the conveyance vehicle, wherein the conveyance vehicle includes a guide line detecting unit that detects a guide line laid along a travel route; a travel controlling unit that makes the conveyance vehicle travel along the guide line; and an own conveyance vehicle position estimating unit that estimates a position of an own conveyance vehicle; and the control device includes a recording unit that records map information including position information of the guide line; and makes the conveyance vehicle travel to the guide line in the map information, when the position of the own conveyance vehicle estimated by the own conveyance vehicle estimating unit is more than a predetermined distance away from the position of the guide line in the map information.