The utility model relates to an oblique support, which is used for reinforcing the role of a booth, and is used for fixing the four aluminum alloy light frames on the four corners of the booth. There are two parts of the inclined support, the diagonal rod and bar. Iron bars for the iron bars, diagonal rods for aluminum alloy material. When the utility model is used, one end of the transverse rod is inserted into the hole of the base and is screwed tightly, and one end of the inclined rod is fixed on the upright post aluminum alloy light frame with a single retaining ring, and the other end is screwed at one end of the extension of the cross rod support.