Abstract: To investigate the influences of cut tobacco width on cut tobacco structure, physical indexes, smoke indexes, aroma component contents in total particulate matter (TPM) of mainstream smoke and sensory quality of cigarette with medium circumference, cut tobacco at 0.80, 0.85, 0.90, 0.95 and 1.00 mm width were separately made into cigarettes at 22.0 mm circumference with otherwise identical manufacturing condition. Cut tobacco structure, physical indexes, mainstream smoke indexes, aroma component contents in TPM and sensory quality of the cigarettes were analyzed. The results showed that:1) When cut tobacco width increased from 0.80 to 1.00 mm, integral strand proportion raised by 2.85 percentage points, short strand proportion lowered by 0.80 percentage points, cigarette circumference presented an increasing trend, and the draw resistance decreased to 164 Pa gradually. At 0.85 mm cut tobacco width, the standard deviations of weight and draw resistance of a single cigarette were the lowest. 2) The CO delivery of mainstream smoke significantly negative correlated to the cut tobacco width; the nicotine delivery slightly increased with the increase of the cut tobacco width in the variation range of 0.04 mg/cig.; the tar delivery increased first and then decreased, peaked at 0.95 mm cut tobacco width. 3) The contents of carbonyls, heterocyclic compounds, phenolic compounds and total aroma components in TPM increased first, then decrease, and tended to be stable; the peaks appeared at 0.85 mm cut tobacco width. 4) The scores of comprehensive sensory quality and single index decreased with the increased cut tobacco width, the sensory quality of cigarettes from 0.80 to 0.90 mm cut tobacco width was better than those of 0.95 and 1.00 mm cut tobacco width.