An organic light emitting device is provided. The organic light emitting device has a mixed light extraction layer, a base substrate, a first light extraction layer, a light-emitting layer, and a second light extraction layer; the first light extraction layer is configured to transmit the light emitted from the light-emitting layer to the base substrate; and the mixed light extraction layer is configured to transmit the emitting light outputted from the base substrate to an air area on the mixed light extraction layer, so as to increase a light utilization of the light-emitting layer.