Organic electroluminescent display (OLED) is considered to be the development direction of future display due to its advantages of low power consumption, self-luminescence, high flexibility, rich colors and fast response speed. With the introduction of technologies such as piezoelectric inkjet printing, such as non-contact, precise positioning of droplets, and large-area fast printing, mass production applications of large-size OLEDs have become possible. The uniformity of droplets in the printing and jetting process plays a vital role in the formation of high-quality OLED functional layers. For this reason, this paper reviews the performance optimization methods of piezoelectric printing OLED, mainly from the optimization of pulse waveform, self-healing control system and rheological characteristics of the ink to further improve the droplet injection performance, and further cited the application of piezoelectric printing OLED in the display and lighting fields.