There are provided a vertical geometry light emitting diode package aggregate useful for the production of a light emitting device having a vertical geometry light emitting diode as the light source, the light emitting device satisfying requirements in terms of current capacity flowed for light emission, dissipation of heat generated due to flow of a large current, resistance to thermal stress, strength of device and light emission efficiency, and a method for producing a light emitting device having a vertical geometry light emitting diode as the light source by using the package aggregate. The vertical geometry light emitting diode package comprises a metal sheet having formed thereon a number of vertical geometry light emitting diode package units, each package unit comprising two or more substrate portions as a part of the metal sheet, which are separated by a slit, and a reflector having a penetrating opening and being adhered to the two or more substrate portions to cover parts of the slit such that the vertical geometry light emitting diode-mounting position is exposed in the inner side of the opening and at the same time, the end part of the slit is exposed in the outer side of the reflector.