Abstract: In recent years,the pitaya is widely cultivated in Fujian,Guangdong,Guangxi and other regions.Pitaya flower is large and smell fragrant.Besides some edible,its potential has not been developed.On the basis of single factor experiment,this paper applied the response surface method to study the effects on the yield by the various factors including different shatter degrees,reagent,temperature and process time,and further optimized the extraction technology of the pitaya flower essential oils:smash degree reached 100meshes,temperature 65℃,time of 3h,reagent of n-hexane.The yield of pitaya flower essential oil was up to 5.242%.