The invention discloses a preparation method of lily-flavored corn oil, and belongs to the technical field of vegetable oil processing. The lily-flavored corn oil is prepared the steps of preparation of corn flour, selection of lilies, scenting and compound fire drying, squeezing, impurity improving, astringent taste removing, degreasing, decoloration, deodorization and the like. The preparation method of the lily-flavored corn oil is simple in technological operation, green and environmentally friendly, the produced corn oil is free of chemical reagents and is natural food with the effects of clearing the liver, improving eyesight, lowering blood pressure, resisting cancers, resisting senility, whitening skin, keeping young and the like; the preparation method is used for deep processing of the corn oil, and the additional values of corn oil products are increased.