Abstract: Tobacco stem was expanded by microwave and granulated,and the application of the granules to cigarette filler was experimented and evaluated.The results showed that:1) the granules went smoothly through the cigarette production line;2) with the increase of granules inclusion,the volume weight of cigarette filler decreased,the weight per 100 cigarettes showed the same tendency,sugar/nicotine ratio and nitrogen/nicotine ratio in the filler increased gradually,TPM(total particular matter),moisture content,nicotine,tar and CO deliveries and puff number of the cigarette decreased gradually,the extent of decrease was in the order of TPM>tar>CO>puff number>nicotine>moisture content;3) when the granules inclusion was in the range of 6% to 15%,the sensory quality and taste style of cigarette were not obviously affected,however,when the proportion reached 20%,sensory quality went something down and taste style was influenced to a certain extent.