The invention discloses a rapid manufacturing method for laser remelting scanning carbide dispersion strengthened aluminum alloy. The method includes the following steps that (1) a three-dimensional part model is established on a computer, and then the three-dimensional part model is converted to be in an STL format and imported into selective area laser melting forming equipment; (2) aluminum alloy powder and carbide powder are mixed, and then are ball-milled through a ball grinder to be evenly mixed; (3) the ball-milled mixed powder is transferred into the selective area laser melting forming equipment, and the mixed powder is formed according to three-dimensional model data under the protection of inert gases; and (4) a formed part is separated from a substrate by the adoption of the wire-electrode cutting technology, and then is subjected to solution treatment in a muffle furnace, afterwards, quenching is carried out, ceramic bead sand blasting treatment is conducted, and accordingly a finished product is obtained. By the adoption of the method, dispersion strengthening phases can be evenly distributed, and therefore the purposes of obtaining the ceramic phase dispersion strengthened aluminum alloy and improving the high-temperature performance of the aluminum alloy are achieved.