To provide a partition device capable of observing the privacy to a certain degree, of effectively utilizing a surrounding space and also of easily changing the positions and the number of partitions when the number of patients has changed.

This partition device is equipped with a base board 10 placed on the floor, a reclining seat 20 fixed on the base board 10, a fixed wall board 30 fixed to the edge of a base board 10, and movable wall boards 35 and 40 installed slidably to the fixed wall board 30.