Abstract: A mathematical model and model analysis were applied to investigate the influence of slim cigarette material factors, including cigarette paper permeability（X₁）, tipping paper permeability（X₂）, plug wrapper permeability（X₃） and specification of tow at tobacco end（X₄）, on ammonia yield in cigarette mainstream smoke. The single factor effect and marginal effect were analyzed. The results showed that： ① the order of the effect of 4 factors on the ammonia yield was： X₂>X₃>X₄>X₁; ② the optimized material combination for low ammonia delivery were： X₁=70 CU,X₂=800 CU,X₃=6 000 CU,X₄=5 303.3 I.

Key words: cigarette, mathematical model, ammonia, cigarette material