The invention belongs to the technical field of physics and chemistry, and discloses a physical refining process of vegetable oil. The physical refining process comprises the following steps of a step 1, citric acid chelation; a step 2), acid treatment; a step 3), centrifugation; a step 4), secondary centrifugation; a step 5), decolorization; a step 6), dewaxing and deodorization; a step 7), preparation of a feed additive. An oil product made by the physical refining process is good in quality; the color reversion phenomenon is slighter; moreover, waste is effectively utilized; the zero release of the waste is realized.