To provide a chair equipped with a simple toilet.

This chair 1 consists of its main body 2 made by connecting some board members, a simple toilet 4 likely hidden-set inside the main body likely to hide, and further, a seat 3 to be set onto the toilet seat 13 of the simple toilet 4. The seat 3 is not connected to the main body 2 so that it can be slid backward to be dropped down at using this simple toilet 4. Since this exposes the toilet seat 13, a user can sit on this toilet seat to evacuate the bowels. Since separating the seat 3 from the main body 2 requires, therefore, no such a connector as a hinge and the like, the seat 3 can be made only with a light cushion. When a user uses this simple toilet, handling the seat 3 becomes very easy.