Abstract: In order to enhance the precision of cut tobacco flavoring, a coarse-fine control system was designed. The system was mainly composed of a flavoring tank, a large volume flavoring system and a small volume flavoring system which responded to the instantaneous variation of tobacco flow by switching between constant volume control and tracking control systems to minimize system's fluctuations. The results showed that after modification, the instantaneous precision of flavoring decreased from 1.84% to 0.69%, and the overall flavoring precision was under 0.2%. This method effectively promotes the intra-batch uniformity and stability of cut tobacco flavoring, and improves cigarette quality.