In order to solve the problems of poor flavoring uniformity, low flavor absorption rate and external environment pollution caused by the unreasonable design of the flavoring machine, based on the discrete element method, the EDEM simulation software was used to simulate the throwing characteristics of the flavoring machine drum. The number and structure of flight boards, drum speed and spraying device were optimized under the number of flight boards and the rotating speed of the drum. The SJ236B flavoring machine produced by Kunming Ship Equipment Group Co., Ltd. was used as the object, and the 1 g The quality of characteristic aroma components in shredded tobacco was tested, and the results showed that the quality RSD value of β-orcinolate methyl ester decreased from 19.81% to 5.68% after improvement, and the desorption rate increased from 46.49% to 62.78%; the quality RSD value of benzyl benzoate The value decreased from 16.14% to 6.06%, and the desorption rate increased from 24.34% to 65.40%. The mass concentration of non-methane total hydrocarbons in the air around the flavoring machine decreased by more than 70%. This technology can provide support for improving the uniformity of tobacco flavoring.