Abstract: To meet the ever-enhancing requirements of Chineses government to the quality of light diesel oil,many refineries and institutes have put much emphasis on improving the quality of light diesel oil and have made notable achievements.Based on comparision between all kinds of methods currently used in refining FCC light diesel oil,this paper details the new development and research results of FCC light diesel oil non -hydrogenative refining technology in China. Denitrogenation effects are good and stability of diesel oil are greatly improved. The quality of light diesel oil after refinement is high, and product yield is over 96%.Some practical proposals are put forward in this paper according to the current situations of light diesel oil production in China.