Abstract: The progress of liquid crystal optics phased array devices in high power laser applications was reviewed in this paper. Based on the realization principle of the device, the reason of the device in the high power application was illustrated. Based on the multi-layer structure of the device, the working condition and limitation of the high power laser were introduced, including the transparent conductive layer, alignment layer and liquid crystal. Meanwhile, the latest research progress of these typical functional layers was carried out. At the same time, the relationship between laser threshold and the operating mode or the heat dissipation structure was also analyzed in detail. The related research progress was also reviewed.