Different drying methods have obvious effects on the aroma of finished white tea. "Pyrotechnic incense" is generally the aroma produced by the full caramelization of sugars in tea leaves under the condition of high temperature, which is more common in Wuyi rock tea. The drying temperature of the medium and low temperature carbon-roasting group is 55~65 ℃, which is lower than the drying temperature of the electric-roasting group, but the finished tea leaves have obvious pyrotechnic aroma compared with the latter. Combined with the carbon-roasting process, it can be speculated that Heating is prone to uneven places, resulting in higher temperature of some tea leaves close to the heat source, resulting in uneven Maillard reaction, thereby forming pyrotechnic incense. This is also consistent with the sensory evaluation results of the charcoal-roasted dry tea having a more complex appearance. Similarly, uneven heating may also lead to large differences in aroma composition between charcoal roasting groups, and there is no obvious correlation. It can be seen from this that the charcoal roasting process can indeed improve the floral and fruity aroma of the finished tea, but it tests the relevant experience of tea processing personnel and the control of temperature changes during the white tea drying process; white tea electric drying machine uses a machine to set the temperature, and uses air circulation The device ensures the stability of the temperature in the white tea drying machine, liberates manpower to a certain extent and improves the yield of finished tea. Relevant enterprises can flexibly choose different white tea drying methods or combinations to create products according to actual application scenarios and different customer needs.