Based on the panel data collected from the 29 manufacturing industries in Jiangsu Province during 2004—2010，this paper analyzes the relationship between FDI and manufacturing industry environment performance，tests threshold effect of the influence of FDI on environment performance from such two aspects as wage level threshold and environment regulation threshold. The analyzing results show that FDI is positively related to the environment performance of clean-production-style industries but is negatively related to the environment performance of pollution-intensive-style industries，that there demonstrates an inverted“N”type curve relation between environment performance of clean-production-style industries and FDI environment regulation and wage level threshold，that there demonstrates an inverted“U”and an upright“U”type curve relation between environment performance of pollution-intensive-style industries and FDI environment regulation and wage level threshold，that most of the industries do not synchronously stay at the optimal region wage level threshold and environment regulation threshold，and that there is overall the situation of relatively low wage level and relatively weak environment regulation strength. There is significant threshold effect of FDI on environment performance of manufacturing industries，local governments should selectively take the foreign investment with both economic benefit and environment benefit， try to avoid the similar policies for raising or decreasing environment regulation strength and industrial wage level while making the related policies，but make corresponding adjustment for environment regulation and wage level in different industries based on the optimal threshold region.