Abstract: A foldable light box, including fourth profiles. The fourth profiles are assembled into a frame structure through profile connectors. The inner side walls of the fourth profiles at the upper end and the lower end of the frame structure are connected with lamp bead profiles. The inner side walls of the lamp bead profiles are stuck with LED lamp bead parts through a thermally conductive adhesive. The folding function of the entire light box is achieved by the cooperation of the foldable mechanism and the meshing mechanism provided by the present utility model. As the size is reduced, the light box is more convenient to place and transport, needs less transportation cost and space, and is more convenient to carry and display.