Normal acetate fiber filter, inside grooved filter and outside grooved filter were chosen as objects in the research. Cigarettes were smoked by smoking machine and a method of SDE-GC/MS was used to analyze flavor composition of extraction liquid. Quantitative and relative analysis was made via data analysis method. The results showed that the number of common and minor error flavor in filter and Cambridge filter was 96. To all kinds of flavors, the retention efficiency of grooved filter was higher than normal acetate fiber filter. Retention of flavor compounds in mainstream smoke showed strong selectivity. The selectivity was mainly positive, but changed with different filters.