Abstract: From the analysis of the monitoring data about the in regional environmental noise androad traffic noise in Shenzhen recent years,it is found that the traffic noise source is the mainfactor which effects the regional environmental noise level of the city over a long period.Becausethe number of motor vehicles increases rapidly and the road net is too close,while the corresponding service facilities are not enough yet,the regional environment noise pollution is relatively concentrated and the sound environment of urban area is getting worse.