Abstract: Enriched-aromatics oils,surfactants and a new activator were used as the additives. The effects of intensifying distillation on Daqing crude oil were determined at different concentrations and distillation temperatures by simple distillation and TBP distillation. The mechanisms of intensifying distillation of crude oi l by using different additives are discussed.The experimental results show that the types of additives, concentrations and distillation temperatures are main factors which affect intensifying distillation of crude oil.The intensifying effect of the new activator developed in this work is better than that of the other additives.