A method of manufacturing a light-emitting device includes forming a wave length conversion portion on a light-emitting element. The light emitting device includes a light-emitting element which emits light of a predetermined wavelength and a wavelength conversion portion which includes a fluorescent substance which is excited by the light emitted from the light-emitting element so as to emit fluorescence of a wavelength different from the predetermined wavelength, which wavelength conversion portion is formed by including the fluorescent substance, a layered silicate mineral, and an organometallic compound. The forming the wavelength conversion portion includes forming a fluorescent substance layer on the light-emitting element using a fluorescent substance dispersion liquid including a fluorescent substance and a layered silicate mineral, applying a precursor solution including an organometallic compound on the light-emitting element, and heating the precursor solution applied on the fluorescent substance layer.