Corn oil is one of the most phytosterol rich vegetable oils. Containing a certain amount of wax， which affects the sensory and transparency of edible corn oil. In this study， the wax ester of bleached corn oil was removed by dry method， the influence of dewaxing process on wax content， phytosterol content and mobility were also investigated. And on the basis of single factor test， the preparation process of dewaxed corn oil was optimized by response surface analysis. The response surface methodology results showed that optimal solution was as follow: 62 h crystallization time， 3.5 ℃ crystallization temperature， 1.4 ℃/min cooling rate. Under these conditions， the content of wax， ester sterol and total sterol in corn oil were 34.75 mg/kg， 842.52 mg/100 g and 1 110.61 mg/100 g， respectively. It provides a theoretical reference for producing edible corn oil rich in phytosterols in the dewaxing process.