In this study, the aqueous enzymatic extraction of idesia polycarpa oil was investigated, and the optimum technological conditions were optimized to provide a feasible basis for industrial production of idesia polycarpa oil. Idesia polycarpa was crushed into 40 mesh sieve and then extracted by centrifugation to obtain idesia polycarpa oil. Taking oil extraction efficiency as an index, the optimum technological conditions for idesia polycarpa oil by aqueous enzymatic method were determined: roast temperature was 150 ℃, roast time was 15 min, pH was 6.0, solid-liquid ratio was 1∶5 (g/mL), amount of compound enzyme was 2.0%, enzymatic hydrolysis time was 5 h, enzymatic hydrolysis temperature was 50 ℃. Under this technological condition, the oil extraction efficiency of aqueous extract was 93.88%. Moreover, the oil extracted by aqueous enzymatic method have a good fragrance. The physical and chemical indexes such as acid value and peroxide value were all good, no needing any refining, but could be obtained through simple and precise filtration, with the high yield of linoleic acid and vitamin E.