Abstract: In order to improve the filtration efficiency of paper filter and the sensory quality of cigarette with a filter made of wood pulp paper,a kind of fiber paper containing cellulose acetate(CAP) was developed by adding a certain amount of cellulose acetate fiber into wood pulp during wet papermaking process and online dry embossing,and the filter rod(CAPF) made of CAP was prepared.The physical characteristics of CAPF,the routine chemical analytes and changes of the 7 harmful components in cigarette smoke were determined.The results showed that:comparing with cellulose acetate filter,CAPF reduced tar delivery in cigarette smoke by 15%-41%,increased the tar retaining efficiency by more than 1.5% per millimeter of filter length;decreased the deliveries of NH₃ and BaP by more than 15% and that of NNK by more than 20%.Comparing with traditional wood pulp paper-acetate combined filter,the sensory evaluation score of cigarette with CAPF raised by 0.9 points,which was close to that with cellulose acetate filter.