PURPOSE: To provide the automated guided vehicle guide system of automatic carrying route change type where data carriers can bee surely arranged in accordance with an actual carrying route and the change of the carrying route can be automatically set.

CONSTITUTION: A post 1 incorporating a data carrier which is driven into the carrying route of an automated guided vehicle 50 at each point and where a data carrier 2 where movement information of the vehicle 50 is preliminarily stored is buried, a reader 21 which is provided in the vehicle 50 and has the two-way communication function for movement information of the data carrier 2 in the post 1 incorporating the data carrier, a visual sensor 49 provided in the vehicle 50, and a carrying route change means which rewrites data of the data carrier 2 by the transmitted radio wave from the reader 21 to change the carrying route at the time of detecting the abnormal state by the visual sensor 49 are provided.