A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a surrounding part surrounding the semiconductor structure and exposing a surface of the first semiconductor layer; a first insulating structure formed on the semiconductor structure, including a plurality of protrusions covering the surface of the first semiconductor layer and a plurality of recesses exposing the surface of the first semiconductor layer; a first contact portion formed on the surrounding part and contacting the surface of the first semiconductor layer by the plurality of recesses; a first pad formed on the semiconductor structure; and a second pad formed on the semiconductor structure.