The high-flashpoint jet fuel was prepared by hydrocracking jet fuel through the cutting and fractional distillation method,and the lubricity was improved by T1602 antiwear additive of naphthenic acids. The effects of the dosage of T1602,as well as the anlistatig,metal deactivator anti-ice additive on the lubricity of high-flashpoint jet fuel were studied. The results show,when the dosage of T1602 is 10. 0 mg/L,the high-flashpoint jet fuel can meet the lubricity index of BOCLE method. The anlistatig,metal deactivator,anti-ice additive and T1602 have good compatibility in the high-flashpoint jet fuel,and the metal deactivator is conductive to improving the lubricity of the high-flashpoint jet fuel.