The invention discloses a method for synthesizing ferulic acid ester of vitamin E, relates to the method for synthesizing the ferulic acid ester, and solves the problems of long reaction time, high synthesis temperature and organic solvent residue in an ester exchange process in the conventional method for synthesizing the ferulic acid ester of the vitamin E. The method comprises the following steps of: firstly, adding ferulic acid, the vitamin E, ethanol, and candida rugosa lipase into a reaction kettle; adding stirring magnetic beads; and replacing air; and secondly, filling CO2 gas; heating and performing magnetic stirring; after reacting, cooling to room temperature and performing centrifugation; and finishing synthesizing. In the method, supercritical CO2 is used as a solvent; the ferulic acid ester of the vitamin E is synthesized by performing an ester exchange reaction directionally by adopting a biological enzymic method; reaction time is shortened by about 5 hours compared with a conventional method; a temperature is low; and no harmful solvent is added in the overall ester exchange process so as to avoids the problem of harmful solvent residue, and simultaneously reduce cis/trans isomer in a reaction process.