Based on the environment pollution composite index and FDI stock，we use panel model to empirically test the influence of FDI on environment and its regional difference. It turns out that there is obvious inertia in environment pollution of China, FDI stock makes a harmful effect on environment quality, and the“pollution haven”hypothesis would exist in a long run. The research also shows the environmental influence of FDI has a significant regional difference: in the short term, FDI has a non-significant positive effect on eastern area but has no good to improve the environment quality of mid-west area; in the long term, FDI has negative influence on all three areas, which presents gradient feature of “high east and low west”.