A jig for manufacturing a capacitor element, comprising: a first substrate including a plane surface portion on a lower surface of the first substrate; a second substrate to be arranged in parallel to the plane surface portion of the lower surface of the first substrate; and a plurality of sockets mounted on a lower surface of the second substrate, wherein first electric connection terminals are provided at the plane surface portion of the lower surface of the first substrate, the first electric connection terminals being individually and electrically connected to an electric power source for supplying an electric current to a capacitor anode body, wherein second electric connection terminals are provided at an upper surface of the second substrate, the second electric connection terminal being electrically connected to the socket, wherein when the second substrate is superposed in parallel to the plane surface portion of the lower surface of the first substrate on a lower surface side of the first substrate, the first electric connection terminal comes into contact with the second electric connection terminal and electrically connected thereto, whereby the socket is electrically connected to the electric power source by the connection, wherein the socket is provided with an insertion port for a lead wire of a capacitor anode body for use in electrically connecting the lead wire to the socket, the insertion port being opened in a downward direction of the second substrate, and wherein the electric power source is connected to an electric circuit formed on at least one surface of the first substrate, characterized in that a lower end of the first electric connection terminal protrudes downward from the plane surface portion of the lower surface of the first substrate, a through-hole is formed in the first substrate, and an electric connection portion is arranged in the through-hole, one end portion of the electric connection portion being electrically connected to the electric circuit formed on an upper surface of the first substrate, the other end portion of the electric connection portion being electrically connected to the first electric connection terminal, and when the second substrate is superposed in parallel to the plane surface portion of the lower surface of the first substrate on the lower surface side of the first substrate, a lower end of the first electric connection terminal protruding from the plane surface portion of the lower surface of the first substrate comes into contact with the second electric connection terminal of the upper surface of the second substrate and electrically connected thereto. a first substrate including a plane surface portion on a lower surface of the first substrate; a second substrate to be arranged in parallel to the plane surface portion of the lower surface of the first substrate; and a plurality of sockets mounted on a lower surface of the second substrate, wherein first electric connection terminals are provided at the plane surface portion of the lower surface of the first substrate, the first electric connection terminals being individually and electrically connected to an electric power source for supplying an electric current to a capacitor anode body, wherein second electric connection terminals are provided at an upper surface of the second substrate, the second electric connection terminal being electrically connected to the socket, wherein when the second substrate is superposed in parallel to the plane surface portion of the lower surface of the first substrate on a lower surface side of the first substrate, the first electric connection terminal comes into contact with the second electric connection terminal and electrically connected thereto, whereby the socket is electrically connected to the electric power source by the connection, wherein the socket is provided with an insertion port for a lead wire of a capacitor anode body for use in electrically connecting the lead wire to the socket, the insertion port being opened in a downward direction of the second substrate, and wherein the electric power source is connected to an electric circuit formed on at least one surface of the first substrate,