The invention provides a solid electrolytic capacitor which suppresses deterioration of electrical characteristics when thermal force or physical force is applied to capacitor elements. The solid electrolytic capacitor includes a structure including laminated capacitor elements, each of the capacitor elements including a valve metal base having a porous layer on a surface thereof, a dielectric layer on the porous layer, a solid electrolyte layer on the dielectric layer, and a cathode layer on the solid electrolyte layer. The cathode layers are directly bonded together on at least a portion ofa surface of each of the cathode layers between the laminated capacitor elements.