Abstract:The decolorization and deacidification of rapeseed oil were studied by using activated carbon/active clay and sodium hydroxide as decolorizer and deacidifier.Orthogonal experiment was carried out on the basis of single factor experiment，and the optimal decolorization process conditions were as follows：temperature 90℃，time 25 min，adsorbent mass ratio 2 ∶2.The rapeseed oil absorbance（0.192）was low and decolorization rate up to 70% under these conditions.The optimal deacidification process conditions were as follows：temperature 70 ℃，time 40 min，alkali concentration of 20%.Rapeseed oleic acid value（0.415 8 mg/g）was lower，and the deacidification rate reached 78% after deacidification.The experimental results of decolorization and deacidification showed that the process of refining could improve the quality of rapeseed oil and had a good application prospect.