Oil palm (Elaeis guineensis) is one of the world's four major woody oil crops, and the production of palm oil obtained from the ripened oil palm fruit has exceeded the soybean oil, which makes palm oil become the largest oil in the world. In recent years, the breakthrough and application of new processing technologies which include dry heating (oven), microwave and continuous sterilization technology, solvent extraction, supercritical fluid extraction and aqueous enzymatic extraction technology, physical, chemical and molecular distillation of refining technology, dry, solvent and surfactant method of oil fractionation,had greatly promoted the development of palm oil processing industry. The research progress of processing technology of palm oil, including fruit sterilization, oil extraction, refining, fractionation and so on, were summarized.