A stowage device is equipped with a transport device that transports a plurality of types of objects in a random sequence, and a control device that sets a position of an object inside a containment area. The control device includes a complete pattern selection unit that selects a complete pattern in which an object transported by the transport device can be stowed on the basis of the type of the object and information on an object currently placed in the containment area. The control device includes a position determination unit that determines a position of an object inside the containment area on the basis of the complete pattern.