There are provided a semiconductor light emitting device that can be manufactured by a simple process and has excellent light extraction efficiency and a method of manufacturing a semiconductor light emitting device that has high reproducibility and high throughput. A semiconductor light emitting device having a substrate and a lamination in which a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer are sequentially laminated onto the substrate according to an aspect of the invention includes a silica particle layer; and an uneven part formed at a lower part of the silica particle layer.