In order to study the relationship between unit consumption of cellulose acetate tow and each affecting factor, predict and assess tow consumption, the relations between unit tow consumption and characteristic parameters of cellulose acetate tow and filter rod were analyzed. By collecting data of tow item (denier per filament and total denier), tow consumption, filter rod (length, circumference and pressure drop) from main domestic filter rod manufacturers in recent two years, statistics analysis was carried out with SPSS software, and the mathematical models for the unit consumption and the targeted factors mentioned above were established. The analyzing results showed that the models were rational in theory. The results of productional verification showed that the unit consumption predicted by the model agreed with practical consumption.