A new type organic electroluminescent device with interinserting interface was fabricated. The basic structure of the device is ITO/NPB/Alq₃/Al. By tailor-made template, the two interinserting interfaces were fabri-cated with NPB/Alq₃and Alq₃/Al,respectively. The charge distribution on the interface and the electric field distribution in the organic layer were changed by introducing interinserting interfaces, thus the electron injection was improved, and the balance of thenumber of the electrons and holes at the interface was obtained. Therefore, the formation probability of exciton was enhanced and the leakage current was reduced. Compared to the traditional two-layer structure devices, the interinserting structure device has lower turn-on voltage and higher luminous efficiency.The driving-voltage of the interinserting structure OELD decreased while the brightness increased with theincrease in the number of the interinsertion. As the current density increased, all the devices with interinserting interface showed high optical-electrical stability. The turn-on voltage of the devicee is 3 V, and was made using the three slots template. At the current density of 54 mA·cm^-2, the device e gets its maximum efficiency, whichis34% higher than the traditional structure device a.