Abstract: Slim cigarette samples with different filter parameters (filter ventilation and filter rod pressure drop) were prepared with 6.0Y/17000 tow, and the effects of filter parameters on its main physical and chemical indexes (cigarette draw resistance, nicotine filtration efficiency, tar release, nicotine release, CO release, mainstream smoke pH) and sensory quality were investigated. The results showed that the cigarettes draw resistance showed a positive correlation with filter rod pressure drop, and a negative correlation with filter ventilation, changing the same filter rod pressure drop, the change range of slim cigarette draw resistance was about 1/2 that of conventional cigarette, changing the same filter ventilation, the change range of slim cigarette draw resistance was about 1.7 times that of conventional cigarette. The filter efficiency of slim cigarette for nicotine had positive correlation with the filter rod pressure drop and the filter ventilation and the filtration efficiency of slim cigarette was lower than that of the conventional cigarettes. The deliveries of tar and nicotine had negative correlation with filter rod pressure drop and filter ventilation, and the influence of filter parameters on slim cigarette was lower than that of conventional cigarette.The unit tar release of CO in mainstream smoke of slim cigarette decreased with the increase of filter ventilation, while the unit tar release of nicotine increased with the increase of filter ventilation. The regression equations of cigarette draw resistance, nicotine filtration efficiency, tar, nicotine, CO and mainstream smoke pH and filter parameters were established respectively, and the prediction accuracy of the model was good. Cigarette sensory evaluation score decreased with the increase of filter rod pressure drop, and increased at first then decreased with the increase of filter ventilation, the sensory quality was the best for slim cigarettes with 40% filter ventilation.