The equipment to control temperature and humidity in burley tobacco air-curing barns were studied to solve the problem of barn rot during air-curing processes at high altitude districts. The results indicated that at high altitude districts, the proper relative humidity in air-curing barns could be reached by raising temperature and ventilation through building and using stoves and flues, which improved smoking quality, aroma, flavor and irritation of leaves, increased high grade leaves by 14.61% and middle grade leaves by 8.01%, and also increased yield by 23.96%, production value by 4 874.10 yuan/ha