The commercialization in the lithium niobate on insulator offers beginning for the emergence of superior-high-quality lithium niobate photonic crystals. In an effort to give steering to the investigate of lithium niobate photonic crystal units, latest progress about fabrication, characterization, and apps of the thin-movie lithium niobate photonic crystal is reviewed. https://courtneyz211qer6.wikijournalist.com/user