With more stringent environmental protection regulations,quality improvement of the gasoline and diesel has become increasingly necessary and impending.In this paper,the solutions to meet the gasoline and diesel specification requirements of Guo Ⅴ emission standards are discussed,including improving octane number,controlling vapor pressure,distillation range,sulphur,olefin,aromatics,oxygen contents etc for gasoline as well as controlling sulfur content,density,cetane index and polycyclic aromatic hydrocarbons etc for diesel.At the same time,the bottlenecks in quality upgrading and research trend of gasoline and diesel are put forward based on the present conditions.