Abstract:In this study，the objectives were to slow the oxidatition and improve the stabilization of rapeseed oil haiying，casein and β-cyclodextrin as the wall-material，the rapeseed oil haiying was sprayed drying for microen-capsulation.On the basis of single factor：select the core content，embedding time，β-cyclodextrin content and monostearin content，This test adopted the response surface methodology to obtain the optimal parameters，the embedment rate as response value，and the results were as follows：core content 18.3%，β-cyclodextrin content 41.1%，monostearin content 50.4%and 50.7 min of embedding time.Under the optimal condition，the micro-capsules embedment rate of rapeseed oil haiying reached 93.82%.