The present invention provides a light emitting device with high brightness. The light emitting device comprises a fiber core, a first electrode, a light emitting layer and a second electrode in this order wherein the light emitting layer is on at least one selected from the fiber core and the first electrode, the second electrode is opaque, and is on a periphery of the light emitting layer and covers not less than 30% and not more than 80% of a periphery of the light emitting layer.