A frame for installing an arc-shaped LED display screen composed of a plurality of LED display modules. The top partition panel and the bottom partition panel have arc edges with the same arc, and are parallel to and spaced apart from each other and both fixed to the primary support, the secondary support, the plurality of module supports, the left support, and the right support. The left support, the right support, and the plurality of module supports are equally spaced apart and fixed along the arc edge of each of the top partition panel and the bottom partition panel, and are configured to connect the plurality of LED display modules, to achieve a seamless assemblage of the arc-shaped LED display screen.