A moon chair includes front supporting legs, rear supporting legs and a rest frame connected onto the front and rear supporting legs. The rest frame is of the shape of a circular ring obliquely erected when the rest frame is unfolded. The front and rear supporting legs are connected with the rest frame through first and second connecting seats, respectively. Each of the first or second connecting seats comprises an integral bent metal sheet. The two ends of the metal sheet are respectively provided with pin holes for arranging connecting pins in a penetrating manner. The metal sheets on the first or second connecting seats are respectively and movably connected with the front or rear supporting legs and the rest frame through the connecting pins. One end of the metal sheet on a first connecting seat is bent to a U-shape to cover the corresponding front supporting leg.