High purity phosphatidylcholine (PC) not only can prevent the occurrence of hepatitis, fatty liver and diseases in heart and blood vessel, but also has functions of lowering cholesterol amount and anticancer. In this text, we studied the separation and purification technology of high purity PC from soybean degummed oil.Silica column chromatography was selected as a primary method of the purification of soybean PC from soybean degummed oil. At this step, mixed solvent of petroleum ether (60~90℃), 2-propanol ...