A display apparatus and a display device including the display apparatus are disclosed. The display apparatus includes a display panel, an elastic supporting backplate and at least one actuating structure; the display panel is attached to the supporting backplate; the actuating structure is arranged on one side of the supporting backplate away from the display panel and are in contact with the supporting backplate; and the supporting backplate is capable of being driven by the actuating structure, so that bending degrees of the supporting backplate and the display panel can be changed.