An automatic feeder exchanging system that automatically exchanges a feeder for which exchange is necessary from multiple feeders set in a feeder setting area of a component mounter, the automatic feeder exchanging system comprising: a feeder stocking area at which a feeder to be exchanged with the feeder for which exchange is necessary stands by; an exchange robot that pulls out the feeder for which exchange is necessary from the feeder setting area and pulls out a feeder that supplies the same components as the feeder for which exchange is necessary from the multiple feeders standing by at the feeder stock area; the automatic feeder exchanging system is characterized by comprising a storage means that, in a case in which the feeder pulled out from the feeder setting area is a feeder with components remaining, stores a link between the component remaining quantity and the feeder; and an exchange period setting means that sets an exchange period of each feeder set in the feeder setting area such that the exchange period of each feeder does not overlap with the exchange period of another feeder, wherein the exchange robot, at the exchange period set by the exchange period setting means, pulls out the feeders from the feeder setting area for which the exchange period has arrived, collects at least the feeders pulled out from the feeder setting area with components remaining into the feeder stock area, pulls out feeders that supply the same components as the feeders for which the exchange period has arrived from the multiple feeders standing by in the feeder stock area, and sets the feeders pulled out from the feeder stock area in the feeder setting area, and the exchange period setting means, when the exchange robot sets the feeders with components remaining in the feeder setting area, sets the exchange period of the feeders with components remaining using the component remaining quantity stored in the storage means. a feeder stocking area at which a feeder to be exchanged with the feeder for which exchange is necessary stands by; an exchange robot that pulls out the feeder for which exchange is necessary from the feeder setting area and pulls out a feeder that supplies the same components as the feeder for which exchange is necessary from the multiple feeders standing by at the feeder stock area; the automatic feeder exchanging system is characterized by comprising a storage means that, in a case in which the feeder pulled out from the feeder setting area is a feeder with components remaining, stores a link between the component remaining quantity and the feeder; and an exchange period setting means that sets an exchange period of each feeder set in the feeder setting area such that the exchange period of each feeder does not overlap with the exchange period of another feeder, wherein the exchange robot, at the exchange period set by the exchange period setting means, pulls out the feeders from the feeder setting area for which the exchange period has arrived, collects at least the feeders pulled out from the feeder setting area with components remaining into the feeder stock area, pulls out feeders that supply the same components as the feeders for which the exchange period has arrived from the multiple feeders standing by in the feeder stock area, and sets the feeders pulled out from the feeder stock area in the feeder setting area, and the exchange period setting means, when the exchange robot sets the feeders with components remaining in the feeder setting area, sets the exchange period of the feeders with components remaining using the component remaining quantity stored in the storage means.