Abstract: In order to obtain modified cellulose acetate fibers that could improve the sensory quality of cigarette, a modified filter tow was produced via adding flavored humectants into spinning oil. The effects of four humectants (A-unsaturated fatty acid, B-polyoxyethylene sulfonate, C-Amaranthaceae extract, D-glucosidase) on the modified spinning oils were analyzed by blue light detection, Zeta potentiometry and laser particle size analysis, the corresponding modified tows were subjected to smoke analysis and sensory evaluation. The results showed that: 1) Zeta potential was the main indicator characterizing the stability of spinning oil modified by flavored humectants, the stability of spinning oil improved along with the increase of Zeta potential. Comparing with the control, the blue light phenomenon of the modified oils weakened, their particle size increased. 2)The physicochemical properties of the modified tows were identical to those of normal tow and satisfied the quality requirements for cigarette filter tow. 3) Comparing with normal tow, the sensory quality of cigarette samples with modified tows promoted slightly, while smoke filtration efficiency decreased slightly. The four flavored humectants in the order of their contribution to cigarette sensory quality were C > D > B > A.