Vegetable oil preparation method

The invention relates to a vegetable oil preparation method. The vegetable oil preparation method comprises the steps of cleaning and purifying oilseeds, adopting a whirlwind type airflow drier to perform drying and regulate the moisture of the oilseeds, peeling and separating kernels from peel, conditioning, pressing to obtain crude oil, sequentially performing supercritical degumming, adsorption deacidification and adsorption dehydration of the crude oil, and filtering to obtain the finished vegetable oil; the process of the adsorption deacidification adopts a fixed bed filled with microcrystalline cellulose derivant to adsorb free fatty acid; the process of the adsorption dehydration adopts the fixed bed filled with anhydrous microcrystalline cellulose to adsorb moisture; the microcrystalline cellulose derivant selects food-grade anhydrous microcrystalline cellulose, is added with food-grade alkali with an addition amount of 10-35 wt percent of the obtained mixture, and through grinding, dispersion, microwave treatment and vacuum cooling, particles are crushed to a size of 100-200 mesh for standby. The whole preparation method has the advantages of no solvent residue, low energy consumption, low extraction consumption, high production quality, environmental protection and the like.