To mount articles on the upper sides of frames and mount bars and apply the overturn preventing action of mounted articles to the sides of an inner frame and auxiliary frames.

This folding rack 1 is constituted of an inner frame 2 and an outer frame 3 formed into a U-shape and having mount bars 4 above the ground plane. The frames 2, 3 are pivotally fitted while their sides are diagonally crossed to form a rack main body, auxiliary frames 6 are removably provided on the sides between the intersections on the same side of the inner frame 2 and the outer frame 3 of the rack main body and the upper side, and spacers 5 forming spaces equal in length to the outer diameter of the auxiliary frames 6 are fitted to the intersections of the inner frame 2 and the outer frame 3.