A method for manufacturing an antenna sheet, wherein the method is for connecting at least one of an antenna coil and a connection pattern, to a conductive member, wherein the at least one of the antenna coil and the connection pattern is provided on one surface of a substrate and wherein the conductive member is provided on the other surface of the substrate, the method being characterized by: a pressing step in which an overlapped portion is pressed, the overlapped portion being a portion where the at least one of the antenna coil and the connection pattern, and the conductive member overlap each other, the at least one of the antenna coil and the connection pattern being formed from a first metal material, the substrate being formed from a thermoplastic resin, the conductive member being formed from a second metal material, the pressing step being performed using a pressing unit from at least one of the one surface and the other surface of the substrate, the pressing step being performed to: form a first through hole to the substrate, wherein the first through hole passes through the substrate; and bring the at least one of the antenna coil and the connection pattern, and the conductive member into contact with each other; and a welding step in which a welded part is formed at the overlapped portion where the at least one of the antenna coil and the connection pattern, and the conductive member are in contact with each other, the welded part being configured to cover an inner wall of a second through hole, wherein the second through hole passes through the substrate, the at least one of the antenna coil and the connection pattern, and the conductive member, the conductive member and one end of the at least one of the antenna coil and the connection pattern are welded in the welded part, the welding step being performed to: weld the at least one of the antenna coil and the connection pattern, and the conductive member to each other; and form the second through hole at the overlapped portion, wherein the welding step is performed using a laser. a pressing step in which an overlapped portion is pressed, the overlapped portion being a portion where the at least one of the antenna coil and the connection pattern, and the conductive member overlap each other, the at least one of the antenna coil and the connection pattern being formed from a first metal material, the substrate being formed from a thermoplastic resin, the conductive member being formed from a second metal material, the pressing step being performed using a pressing unit from at least one of the one surface and the other surface of the substrate, the pressing step being performed to: form a first through hole to the substrate, wherein the first through hole passes through the substrate; and bring the at least one of the antenna coil and the connection pattern, and the conductive member into contact with each other; and form a first through hole to the substrate, wherein the first through hole passes through the substrate; and bring the at least one of the antenna coil and the connection pattern, and the conductive member into contact with each other; and a welding step in which a welded part is formed at the overlapped portion where the at least one of the antenna coil and the connection pattern, and the conductive member are in contact with each other, the welded part being configured to cover an inner wall of a second through hole, wherein the second through hole passes through the substrate, the at least one of the antenna coil and the connection pattern, and the conductive member, the conductive member and one end of the at least one of the antenna coil and the connection pattern are welded in the welded part, the welding step being performed to: weld the at least one of the antenna coil and the connection pattern, and the conductive member to each other; and form the second through hole at the overlapped portion, wherein the welding step is performed using a laser. weld the at least one of the antenna coil and the connection pattern, and the conductive member to each other; and form the second through hole at the overlapped portion, wherein the welding step is performed using a laser.