Lutein has its physiological function and is a natural pigment,but the lipophilic and unstable character of lutein limit its application.It was found that the microencapsulation of lutein with modified starch as the wall material has higher microencapsulation efficiency and retention ratio.The optimum parameters of the process were:homogeneous pressure 40 MPa,the inlet air temperature 195℃.The microencapsulation efficiency of lutein was above 90%,and the retention ratio of lutein was 85% higher after storage at 45℃ for 40 days.The glass transition temperature of lutein microcapsule products was 91.6℃,which was higher than the room storage temperature.Thus it ensured the microencapsulated lutein had a better storage stability.