Providing an ultraviolet light emitting device preventing the light emitting operation with ultraviolet rays causes the electrical characteristics of the encapsulating resin is degraded high quality and high reliability. Which is an ultraviolet ray emitting element comprising a nitride semiconductor and a pad electrode 2 coated with an ultraviolet light emitting element 2 through an ultraviolet ultraviolet light emitting device package 3 made of resin, wherein the resin encapsulating the ultraviolet light-emitting element 3 at least 2 specific portion 3a of the first type is an amorphous fluororesin, constituting the first type amorphous fluororesin terminal functional group is a polymer or copolymer of a metal pad electrodes 16 and 17 were not in contact with binding 16,17 of non-reactive terminal functional group.