本文介绍和评价了国内外现场用油液污染度测量的方法,并选定光测法进行研究。以实验为基础,选取了合适的测量光波长,制出了研究光测法的实验装置,测出了油液粘度、颜色及水分对透射光强度的影响及油液污染度与透射光强度的关系。 This paper introduces and evaluates the domestic and foreign oil pollution measurement methods at home and abroad, and selects the light measurement method to carry on the research. Based on the experiment, the suitable measuring light wavelength was selected, and the experimental apparatus for studying the photometric method was established. The influence of oil viscosity, color and moisture on the transmitted light intensity and the oil pollution degree and transmitted light intensity relationship.