Provided are an organic light-emitting display panel and an organic light-emitting display apparatus. The organic light-emitting display panel includes an array base substrate including a plurality of driving elements, and includes a plurality of organic light-emitting devices. Each of the plurality of organic light-emitting devices is corresponding to a respective one of the plurality of driving elements, and the each of the plurality of organic light-emitting devices includes an anode and a cathode, a cathode, an organic luminous layer, an electron transport layer, and a transition layer. The organic luminous layer is disposed between the anode and the cathode, the electron transport layer is disposed between the luminous layer and the cathode, and the transition layer is disposed between the cathode and the electron transport layer, and the transition layer includes an organic material.