The invention provides a light emitting device and a manufacturing method thereof, and a display device. The light emitting device comprises a base substrate and a laminated structure formed on the base substrate, the laminated structure including a first electrode, an organic layer and a second electrode which are laminated, the organic layer is provided between the first electrode and the second electrode, wherein the second electrode is provided with light extraction particles therein. In solutions of the light emitting device and the manufacturing method thereof, and the display device, the metal electrode is provided with light extraction particles therein, the light extraction particles destroy the surface plasma waves generated by the metal electrode, so that light fallen into the surface plasma waves can be extracted, the light extraction efficiency of the metal electrode is increased, and thus the light extraction efficiency of the light emitting device is increased.