Abstract: In order to find out the lowest temperature of oil-fueled burner required for different process gas temperatures in HXD, two cigarette blends, A and B, were tested at different set burner temperatures, the difference between the temperatures of process gas at the exit of the heat exchanger and in the dryer, the relationship between the proportion of process gas being heated and burner temperature, and their effects on the qualified rate of moisture content in dried cut tobacco were analyzed with golden section intercept. The results showed that:1) within the test range, the natural gas consumption per ton cut tobacco decreased by 28% when the burner temperatures for cigarette A and B were set at 450℃ and 430℃, respectively; 2) under the conditions that the difference between the process gas temperatures in the drying tower and at the exit of the heat exchanger was in the range of 30℃ to 50℃ and the proportion of process gas being heated in the heat exchanger were less than 86.8% and 85.6% for cigarette A and B, respectively, the corresponding burner temperature was the lowest and suitable for the control of tobacco moisture content.