To provide a solid electrolytic capacitor capable of high performance, the capacitor including: an anode element made of tantalum or niobium; a dielectric film disposed on the anode element; and a solid electrolytic layer disposed on the dielectric film, the dielectric film including: a first dielectric film made of an oxide of the tantalum or niobium, formed on a surface of the anode element; and a second dielectric film made of a composite metal oxide having a perovskite structure, formed on the first dielectric film.