A three-dimensional display includes a first display module, a second display module, a light-combining module and a view-scanning layer. The first display module provides a first display image. The second display module provides a second display image. The light-combining module is disposed in a first transmission path of the first display image and a second transmission path of the second display image. The first transmission path and the second transmission path after the first light-combining module have the same direction. The view-scanning layer receives the first display image transmitted along the first transmission path and the second display image transmitted along the second transmission path and respectively projects a part of the first display image and a part of the second display image onto a first view direction and a second view direction.