Abstract: In a process and an apparatus for fabricating a solid electrolytic capacitor comprising a capacitor element including an anode member provided with a chemical conversion coating and an electrically conductive polymer serving as a cathode electrolyte and impregnating the capacitor element, an agitating station 7 is provided between a mixing station 5 and an impregnating station 6 to have a mixture of a monomer and an oxidizer agitated immediately before the step of impregnating the capacitor element with the mixture to render the mixture uniform. The mixture can be agitated, for example, by an air injection nozzle disposed at the agitating station 7 for injecting compressed air into the mixture. This affords solid electrolytic capacitors with diminished variations in electrical characteristics.