As a new environmentally-friendly polymer preparation technology,light curing is widely used in fields like coatings,inks and 3 Dprinting.Photoinitiator is an indispensable part in this technology.This paper focused on the acylphosphine oxide type photoinitiators mostly applied in the market and summarized their synthesis,properties and applications systematically.Moreover,it also predicted the development trend of acylphosphine oxide type photoinitiators.