To reduce the equipment cost necessary for a transfer device and its automated guided vehicle, by making it possible to respond by the same transfer device, even when the sizes of the works and the number of the works transferred at a time are different.

This transfer device for an automated guided vehicle can transfer the works between a ground equipment set at the transfer position, and a transfer device main body 10 is furnished with side guides 16 provided to guide the transfer of the works at both sides of the transfer surface 12 in the width direction, and a center guide 22 provided to guide the transfer of the works between the both side guides 16. The both side guides 16 are composed to allow to regulate individually the mutual distance in the width direction of the transfer surface 12, while the center guide 22 is composed to allow to convert to two positions at the using position to guide the transfer of the works, and the shunting position sunk under the transfer surface.