The invention provides a preparation method of a loop-type discrete control patterned organic electroluminescent device. The method includes first preparing an inner layer electrode, then completing the preparation of an internal and external discrete ITO electrode and a discretely controllable patterned electrode, and finally conducting evaporation of an organic layer and a metal electrode to obtain the loop-type discrete control patterned organic electroluminescent device. The preparation method has the advantages of simple process and low cost. By means of the lamination design of the patterned electrode, the organic electroluminescent device has the loop structure, has high accuracy and low size and can achieve inside and outside discrete illumination of the organic electroluminescentdevice pattern. No auxiliary process of a lampshade is required, and the size of the organic electroluminescent device can be saved.