The invention provides a hydrostatic extrusion technology of an alumina dispersion copper alloy, and belongs to the technical field of powder metallurgy new materials. The hydrostatic extrusion technology comprises the following steps that a formed and sintered Cu-Al2O3 alloy billet is adopted; the Cu-Al2O3 alloy billet is annealed firstly and then protected through the hydrogen atmosphere; then the annealed Cu-Al2O3 alloy billet is subjected to hydrostatic extrusion machining, and thus the alumina dispersion copper alloy is obtained; and finally, the Cu-Al2O3 alloy after hydrostatic extrusionis water-cooled. The hydrostatic extrusion technology has the advantages that the hydrostatic extrusion technology is suitable for extrusion machining of the alumina dispersion copper alloy with thealumina content being 0.08-15.00%; the disadvantages that in the traditional hot extrusion process, products are prone to cracking, performance distribution is uneven, and the deformation size is difficult to control are overcome; the product cost is lowered, and the production efficiency of the alumina dispersion copper alloy is improved; and the hydrostatic extrusion technology provides a possibility for industrial production of the alumina dispersion copper alloy.