A package for a light-emitting device, the package comprising: a base body including an upper surface and a lower surface; a frame body bonded to the upper surface of the base body, the frame body including one or more outer lateral surfaces, one or more inner lateral surfaces, and one or more first through-holes that extend through the frame body in a lateral direction so as to connect an inside and an outside of the frame body; one or more lead terminals, each of which extends through a respective one or the one or more first through-holes; one or more plate bodies, each of which is bonded to a respective one of the one or more outer lateral surfaces or a respective one of the one or more inner lateral surfaces of the frame body, each of the one or more plate bodies having one or more second through-holes that extend through the plate body in the lateral direction, wherein each of the one or more lead terminals extends through a respective one of the one or more second through-holes, and wherein a thickness of each of the one or more plate bodies is larger than a thickness of the frame body, and wherein each of the one or more plate bodies is made of a conductive material, and wherein the frame body includes an upper peripheral portion that is bent inward or outward above the one or more plate bodies; and one or more fixing members, each of which is disposed in a respective one of the one or more second through-holes and fixes a respective one of the one or more lead terminals in a respective one of the one or more plate bodies, and wherein the one or more fixing members are made of an insulating material. a base body including an upper surface and a lower surface; a frame body bonded to the upper surface of the base body, the frame body including one or more outer lateral surfaces, one or more inner lateral surfaces, and one or more first through-holes that extend through the frame body in a lateral direction so as to connect an inside and an outside of the frame body; one or more lead terminals, each of which extends through a respective one or the one or more first through-holes; one or more plate bodies, each of which is bonded to a respective one of the one or more outer lateral surfaces or a respective one of the one or more inner lateral surfaces of the frame body, each of the one or more plate bodies having one or more second through-holes that extend through the plate body in the lateral direction, wherein each of the one or more lead terminals extends through a respective one of the one or more second through-holes, and wherein a thickness of each of the one or more plate bodies is larger than a thickness of the frame body, and wherein each of the one or more plate bodies is made of a conductive material, and wherein the frame body includes an upper peripheral portion that is bent inward or outward above the one or more plate bodies; and one or more fixing members, each of which is disposed in a respective one of the one or more second through-holes and fixes a respective one of the one or more lead terminals in a respective one of the one or more plate bodies, and wherein the one or more fixing members are made of an insulating material.