Abstract: To enhance the smoking experience of slim cigarettes and to clarify the control goal for filter cigarette making process, slim cigarettes with a length of 97.0 mm and a circumference of 17.0 mm were studied, and the variations in physical indexes, dynamic draw resistance, combustion cone-falling propensity, mainstream smoke chemical composition and sensory quality among the cigarettes with different dense-end ratios. The results indicated that: 1) With an increase in the dense-end ratio, the average hardness of cigarette samples in each group decreased. Cigarette samples with dense-end ratio of 7%-15% (group B and group C) showed better stability of all physical indexes. 2) Cigarette samples with dense-end ratio higher than 15% (group D and group E) had significantly higher dynamic draw resistance for the second puff compared with the other cigarettes. The average dynamic draw resistance increased by roughly 15 Pa with a 10 mg/cm³ rise in cut tobacco density for a single puff. 3) Cigarette samples with dense-end ratio less than 7% (group A) had the highest combustion cone-falling propensity (36%), while those with higher dense-end ratio were more prone to combustion cone fall in the middle stage of smoking (3rd-5th puffs). 4) No significant differences were found in smoke chemical composition among cigarettes with different dense-end ratios, while their puff-by-puff release patterns varied. For samples with dense-end ratio more than 20% (group E), over 40 chemical components in the first two puffs differed significantly from those with low dense-end ratio (group B). 5) From the perspective of smoking smoothness, there were significant differences between cigarettes with dense-end ratio more than 20% and cigarettes with small and moderate dense-end ratios (7%-15%). This study provides methodological and data support for optimizing the control of filter cigarette making processes and enhancing the smoking smoothness of slim cigarettes.