To provide a simple toilet which has sufficient strength and has a compact assembly shape.

The simple toilet has an outer side annular body 4 made of cardboard and molded in a square ring shape, and partition walls 51 and 52 made of the cardboard, disposed inside the outer side annular body 4, extended in parallel to each other and in parallel to the opposing walls 41 and 42 of the outer side annular body 4, and bonded to the inner side faces of the opposing walls 43 and 44 of the outer side annular body 4 respectively at both ends. A support part is formed by bending extension pieces 511 and 521 into the spaces S1 and S2 between the opposing walls 41 and 42 and bending extension pieces 411 and 421 so as to cover the extension pieces 511 and 521. A connection wall is configured by bending extension pieces 431 and 441 into the space S3 between the right and left partition walls 51 and 52 and bending extension pieces 432 and 442 into the spaces S1 and S2 between the respective partition walls 51 and 52 and the opposing walls 41 and 42.