[Objective] The aim was to find the best degumming technology of rapeseed oil.[Method] Phospholipase Lecitase Ultra was used to tested for the optimization of degumming factors of the rapeseed oil,and the optimum conditions were studied by single factor experiments,orthogonal test experiment and production costs.[Results] The optimum reaction condition were as follows:phospholipase dosage was 66.67 mg/kg,initial pH value was 5.5,reaction temperature was 40 ℃,reaction time was 4.5 hours.Phosphorus content of...