Abstract: Besides policy factors, five methods of cost-cutting of biodiesel are reviewed, including new raw material with higher oil content, shorter regeneration cycle, which is suitable for infertile soil and different climatic conditions; heterogeneous catalysts；new technologies (e.g. supercritical methanol and ultrasonics) ；higher added value utilization of by-product glycerin with simple method (propylene oxide chloride, 1,3-propanediol, pyruvic alcohol etc. ) and moderate scale of production.

摘要： 综述了除政策因素外，降低生物柴油生产成本的5种方法：选择含油率高、再生周期短、适应贫瘠土地及不同气候条件的新型植物原料；研究新型固体催化剂；引入新工艺（超临界法和超声波法）；使用比较简便的方法将废弃的甘油转化为高附加值的产品(环氧氯丙烷、1, 3–丙二醇、丙酮醇等)以及适度生产规模等。