Abstract: Kerosene in accord with No.3 jet fuel standard can be produced from the existent hydrocracking unit. In order to produce high flash kerosene, the hydrocracking unit need revamping. We use simulation software to do research, and select simple and feasible revamping scheme finally, that is increasing the reboiler duty and draw off. In the mean time the EBP of heavy naphtha is less than 180℃.