In order to solve the problem of high tobacco temperature upstream cylinder and irrational design of deflector, which caused much tobacco break, tobacco stick and wet tobacco mass, the Humidition of Tobacco is optimized and improved by adding a low pressure blower for cooling belt, and improving cylinder deflector.The results of application showed that the tobacco temperature upstream cylinder could be fallen from 65 ℃ to 40 ℃ with blower, 590 full pressure, work at 15 Hz, and the tobacco break is little, tobacco stick and wet tobacco mass were also descend. The transformations reach the goal of improving product quality, and reducing tobacco consumption.