Cigar-filler variety Chuxue 14 （CX-14） was used to conduct a field experimen to study the effects of sulfur fertilizer dosages including 0， 60， 120 and 180 kg/hm² on the agronomic traits， yield， quality and combustion performance of cigar tobacco.The results showed that the plant height， maximum leaf width， leaf length， effective leaf number， and SPAD value of cigar tobacco during the period of growth， the yield and the rate of superior tobacco under applying sulfur fertilizer was increased compared with no sulfur application， thus the output value of cigar tobacco was increased as well.Among them， the yield and output value were highest under 120 kg/hm² sulfur application， and the rate of superior tobacco was highest under 60 kg/hm² sulfur application.The application of sulfur fertilizer tended to increase the content of total sugar， reducing sugar， and crude protein， the proportion of reducing sugar in cigar tobacco leaves， which in turn helped to improve the intrinsic quality of tobacco leaves.Compared with no sulfur application， the 60 kg/hm² sulfur application increased the activation energy during tobacco combustion， lowered the initial temperature of tobacco combustion， and reduced the content of ash.The maximum heat flux temperature and total heat release increased by 10.9% and 6.3%， respectively， and the frequency factor during combustion decreased by 43.7%， thereby improving the combustion performance of tobacco leaves.It is indicated that the appropriate sulfur fertilizer dosage for cigar tobacco leaves was 60 kg/hm² under the conditions of this experiment.Excessive application of sulfur fertilizer including 120 kg/hm² and 180 kg/hm² can increase the yield and economic benefits of cigar tobacco leaves， but it is not conducive to improving the combustion performance of tobacco leaves.Therefore， it is possible to consider reducing the application of potassium sulfate fertilizer appropriately in the process of planting cigar and replacing it with potassium carbonate and other potassium fertilizers to reduce the negative effects of excessive sulfur fertilizer on the combustion performance of tobacco and soil acidification.