Abstract: For investigating the influence of the combination of cigarette paper,plug wrapper,tipping paper and filter on the filtration efficiency of cigarette,the ventilation rates of paper and filter,and total ventilation rate,L₂₇(313) split-plot orthogonal design was used in online experiment and sampling.The test data were analyzed with intuitive analysis,variance analysis and contribution analysis,the results showed that:1) the length of filter,draw resistance,and air permeability of tipping paper were significant and important factors affecting the experimental indexes;2) the paper and total ventilation rates were the highest when the length of filter was 27 mm and draw resistance was 794 Pa;3) the filter ventilation rate and filtration efficiency of cigarette were positively correlated with filter length and draw resistance;4) the filter and total ventilation rates and filtration efficiency were positively correlated with the air permeability of tipping paper,while paper ventilation rate was contrary.