Abstract: In order to satisfy the increasing market demand of jet fuel and chemical materials, domestic catalysts RN-410B and RHC-133B developed by SINOPEC Research Institute of Petroleum Processing were applied in PetroChina Dushanzi Petrochemical Company 2.0 Mt/a hydrocracking unit in 2019 for the first time. The results illustrated that the yield of jet fuel was 35.98% when the tail oil yield was 35.87%, and the yield of jet fuel was increased by 13.05 percentage points when compared with the last cycle. Besides, jet fuel smoke point was 29.9 mm and BMCI of the tail oil product was 8.3, therefore reached the target of reducing diesel, meanwhile improving the jet fuel yield and tail oil yield and improving the product properties. During the epidemic situation, by lowering the cutting point of tail oil，the yield of tail oil could be raised to 44.4%，BMCI value is 11.8，and enterprise economic benefit is increased remarkably. In addition, through the analysis of the problems existing in the current catalyst operation, the control measures were put forward to achieve the goal of 5-year turnaround cycle of the catalyst.

Key words: Jet fuel, tail oil, hydrocracking, BMCI