The present invention relates to a multi-light-emitting body and a preparation method thereof. The multi-light-emitting body according to one embodiment comprises: a first light-emitting layer formed from a mixture of a polymer material and a light-emitting material; an electrode layer formed inside a nanowire area provided on the first light-emitting layer, and having a plurality of first nanowire electrodes and a plurality of second nanowire electrodes which extend in a first direction without overlapping each other; and a second light-emitting layer formed from a mixture on the first light-emitting layer on which the electrode layer is formed.
