It is an object of the present invention to provide a solid electrolytic capacitor which can reduce the ESL and the ESR and increase electrostatic capacitance at a small size, and a method for manufacturing such a solid electrolytic capacitor. A solid electrolytic capacitor component includes a foil-like aluminum substrate whose surface is roughened or enlarged and which is formed with an aluminum oxide film 2x on the surface thereof and foil-like aluminum substrates whose surfaces are not roughened and a cathode electrode including a solid high molecular polymer electrolyte layer, a graphite paste layer and a silver paste layer is formed on the surface of the foil-like aluminum substrate. In the solid electrolytic capacitor component 110, lead electrode pairs including anode lead electrodes are disposed adjacent with each other, whereby magnetic fields to be generated are canceled.