The invention relates to a quanta point/well light-emitting diode, which prepares a light-emitting diode on one side of basic plate; the second and third lighting layers on the another side of said basic plate. When a consequent bias voltage in correct amount is processed on said light-emitting diode, the first lighting layer can emit the first light, via which the second and third lighting layers can be excited to generate the second and third lights in different colors to be output; and when the first, second and third lights are mixed, the needed light can be output.