A supporting device for a display apparatus is disclosed. The supporting device comprises a chassis, threaded stem casters, a bed plate, and a main beam. The plurality of casters disposed in the chassis allow the supporting device be moved. The bed plate covers the chassis and comprises a first top wall and a first side wall surrounding the first top wall. A height of the first side wall is greater than that of the chassis. The first top wall covers and is on top of the chassis. The first top wall comprises an opening area. The plurality of casters are located in the opening area. The main beam is fixed to the chassis for hanging the display apparatus. The present invention supporting device is readily adjustable. The display apparatus is moved conveniently and efficiently, and the integration design of the supporting device and the display apparatus is more aesthetically pleasing.