基础油作为成品油的主体，其中的饱和烃和芳烃是影响成品油性能的主要组分，而硫氮化合物由于其多变性和含量极少，对成品油性能（主要是氧化安定性）影响很小，且没有很强的规律性。今后的工作方向应是用加氢工艺以提高基础油中饱和烃含量，除去芳烃及硫氮化合物，从而改善基础油对添加剂的感受性。 Base oil, as the main body of product oil, saturated hydrocarbon and aromatic hydrocarbon are the main components that affect the properties of refined oil. Because of its variability and content, sulfur and nitrogen compounds have a great influence on the product oil properties (mainly the oxidation stability) Small, not very regular. The future direction of work should be the use of hydrogenation process to increase the saturated hydrocarbon content of the base oil to remove aromatic hydrocarbons and sulfur compounds to improve the sensitivity of the base oil to additives.