The invention discloses a preparation process of a solid-state aluminum electrolytic capacitor and the solid-state aluminum electrolytic capacitor, and belongs to the technical field of capacitors. The preparation process of the solid-state aluminum electrolytic capacitor comprises the steps of firstly, carrying out formation repair treatment on a core package; then, impregnating the core packagesubjected to formation repair treatment in a conductive polymer dispersion liquid under a negative pressure condition; then, inverting the core package impregnated with the conductive polymer dispersion liquid, then, carrying out drying treatment, and electrifying the core package which is being subjected to the drying treatment at the same time; and then, impregnating the dried core package in apost-treatment agent, and carrying out secondary drying treatment and assembling to obtain the solid-state aluminum electrolytic capacitor. According to the invention, during the drying treatment of the core package impregnated with the conductive polymer dispersion liquid, the core package is electrified, so that the core package is aged while the drying treatment is performed, thereby being capable of saving the subsequent aging treatment process, thus reducing the energy consumption and improving the production efficiency.