The research method in the research of distribution regularity of SO 2 ground concentration in Zhuzhou urban area by taking advantage of overhead point sources diffusion model was introduced.Research results made clear that SO 2 distribution curves showed distribution regularity of the saddle shape and that the main cause for the bad air quality in Zhuzhou urban area affected by overhead sources in Tsing Shuitang in industry area.It also made clear that the air quality would be thoroughly improved by trea...