Abstract: The significant difference about sulfur content between Koelreuteria paniculata and Ligustrum lucidum blades and foliar dust in Xinxiang different function areas were studied with multiple comparisons. Fitting monadic mathematic model of blade sulfur content and atmospheric pollutants sulfur concentration and foliar dust pollution elements sulfur content, using multivariate regression analysis method to establish the relations among the atmospheric pollutants sulphur concentration and the sulfur content of blades and foliar dust. The results showed that Koelreuteria paniculata and Ligustrum lucidum blades sulfur content, sulfur content of foliar dust and atmospheric sulfur concentration had significant difference or extremely significant difference in different functional areas compared with the clean area. Monadic mathematic model showed that the sulfur content of blades and foliar dust in Koelreuteria paniculata and Ligustrum lucidum had significant correlation (R2=08812, 06471), the sulfur content and atmospheric sulfur concentration in Koelreuteria paniculata and Ligustrum lucidum showed extremely significant correlation (R2=09516) and significant correlation (R2=07532) respectively. Binary biological monitoring mathematical model showed that the atmospheric pollutants sulfur concentration and the sulfur content of blades and foliar dust were extremely significant correlation (R2=09202, 09233).