Abstract: A luggage stowing device includes a second hand luggage detection unit detecting information of pieces of hand luggage transported by a main conveyor, a stowing robot stowing pieces of the hand luggage transported by the main conveyor with respect to two containers, and a stowing computation unit and a stowing control unit controlling the stowing robot such that at least one of the order of priority of the containers for stowing pieces of the hand luggage and the order of stowing pieces of the hand luggage in the containers with respect to the order of transporting pieces of the hand luggage is adjusted on the basis of the information of pieces of the hand luggage detected by the second hand luggage detection unit.