An LED display frame structure includes a light guide plate and a heat dissipation frame. The heat dissipation frame is mounted around the periphery of the light guide plate. At least one side of the light guide plate is provided with an LED strip and a 7-like heat dissipation plate. The back of the LED strip is provided with a two-sided adhesive strip to be attached to a groove of the 7-like heat dissipation plate. The 7-like heat dissipation plate has a cover plate next to the groove. The cover plate is attached to an adhesive strip of the light guide plate. The present invention can be assembled conveniently and quickly.