A stacked organic electroluminescent device, which includes a substrate, an anode layer, organic emitting layers, carrier generation layers, reflecting layers and a cathode layer, is provided. The substrate has first emitting region, second emitting region, and third emitting region. The anode layer is above the substrate. And above the anode layer are the following layers sequentially: a first organic emitting layer, a first carrier generation layer, a second organic emitting layer, a second carrier generation layer, and a third organic emitting layer. The first reflecting layer, the second reflecting layer, and the third reflecting layer are in the stacked structure. And each of them is disposed corresponding to the first emitting region, the second emitting region, and the third emitting region. The cathode layer is on the third organic emitting layer. The stacked organic electroluminescent device has full color spectrum, improved luminant efficiency, and color purity.