Abstract: In order to reduce the tobacco loss from cigarette end,the relation of PASSIM 12000 cigarette maker setting to the proportion of long strands and tobacco loss from cigarette end was studied.The main factors affecting cut tobacco size distribution were the specification of ecreteur disc,the clearance between large and small carded drum,the opening of large fan valve and the rotating speed of picker rooler in cigarette maker.The results showed that:when the pocket depth of ecreteur disc was 3.5/3.0 mm,the clearance between large and small carded drum,the opening of large fan valve and the rotate speed of picker roller were 0.8mm,80% and 140 rpm,respectively,the cut tobacco breakage generated in hopper of cigarette maker reduced obviously and the rate of tobacco loss from cigarette end beyond the set limit decreased from 0.52% to 0.40%.