To provide a folding chair which is normally a folding chair and can be utilized when there is no toilet nearby when it is carried in the case that a stomachache or the like occurs while being out in a private car.

A sitting part on an upper side functions as a part of a normal chair. The sitting part on the upper side is rotated with a fulcrum part as a center and the sitting part on a lower side is exposed. The center of the sitting part on the lower side is formed with a hole and it is utilized as the toilet by putting a large bag there. Also, the sitting part on the upper side can be erected so as to hide the lower abdominal part. This chair is foldable, small-sized, and portable.