According to one embodiment, a semiconductor light emitting device includes a semiconductor layer, a first electrode, a second electrode, an insulating layer, a first interconnection layer, a second interconnection layer, a first metal pillar, a second metal pillar, a resin layer and a conductive material. The conductive material is provided on a surface of the resin layer between the first metal pillar and the second metal pillar, and electrically connects the first metal pillar and the second metal pillar.