Abstract: The spray drying technology was used to prepare mint flavor tobacco microencapsulation,with wall materials prepared by three kinds of OSA modified starch(HI-CAP,CAPSUL and CAPSUL TA),sucrose and maltodextrin(1:1:1),and mint flavor as core materials. The microcapsule particles were characterized by SEM scanning electron microscopy and thermogravimetric analysis,and the embedding rate,storage stability and release characteristics of the microcapsule particles were tested. The results showed that the microcapsule particles prepared by using OSA modified starch as wall material possessed a continuous and dense structure. The embedding rate of microcapsules embedded with CAPSUL modified starch was higher(95.26%),and its retention and duration of mint essence were better than that of HI-CAP and CAPSUL TA modified starch,respectively. The retention rate of peppermint oil was 92.76% after 30 days of storage. At the temperature of 80 ℃,the release rate of menthol reached 51%. And the application of this type microcapsule particles in cigarette could improve the effect of mint flavor and smoking quality.