The invention discloses an organic light-emitting device, which comprises an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode laminated in sequence, wherein the electron injection layer is composed of a three-element doping layer and a titanium dioxide layer; the three-element doping layer comprises rubidium compound material, electron transport material and metal material; the rubidium compound material selects at least one from rubidium carbonate, rubidium chloride, rubidium nitrate and rubidium sulfate; and the electron transport material selects at least one from 4, 7-Diphenyl-1, 10-phenanthroline, 2-(4-tert-Butylphenyl)-5-(4-biphenyl)-1,3,4-oxadiazole, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, and 2,2'-(1,3-Phenylene)-bis [5-(4-tert-butylphenyl)-1,3,4-oxadiazole]. The above organic light-emitting device is high in light emitting efficiency. The invention also provides an organic light-emitting device manufacturing method.