The present disclosure provides an automatic transaction device capable of accurately monitoring a medium in a transport path. This automatic transaction device has: one or more transport paths for transporting a medium; a transport driving unit for driving the transport paths; a driving information detection unit for detecting driving information about the transport driving unit; and a control unit for identifying the position of a medium in the transport paths on the basis of medium management information that includes at least the driving information detected by the driving information detection unit, and performing a prescribed control.
