The contents of heavy metals Cd,Hg,As,Pb,Cr,Cu,Ni and Zn were monitored in the surface soils at 208 monitoring points in the area studied. The environmental baseline values of heavy metals and the cumulative changes of the baseline value relative to the background value were obtained. Based on this,the degree of disturbance of heavy metals in the regional surface soil by human activities can be judged. Standardized methods and relative cumulative frequency statistics were used to acquire the environmental baseline value and deviation of heavy metals in regional surface soil. The average environmental baseline values obtained by these two methods were used as the environmental baseline values of heavy metals in the surface soil of the area studied. The contents of heavy metals Cd,Hg,As,Pb,Cr,Cu,Ni,Zn exceeded the risk screening values for soil contamination of agricultural land of monitoring points in regional surface soil. The ratio of monitoring points was 17.3%,1.0%,4.3%,0.0%,2.4%,3.8%,1.9%,E95and 0.0%,respectively. Compared to the regional background values,the heavy metals had accumulated to different degrees of monitoring points in regional surface soil,and the ratio of monitoring points was 26.9%,26.0%,29.8%,17.3%,16.8%,20.2%,28.4%,and 21.6%,respectively. The mean environmental baseline value of heavy metals Cd,Hg,As,Pb,Cr,Cu,Ni and Zn obtained by the standardized method and the relative cumulative frequency statistics was 0.22 mg/kg,0.09 mg/kg,13.34 mg/kg,30.7 mg/kg,82.0 mg/kg,29.7 mg/kg,38.0 mg/kg and 89.1 mg/kg,with the relative deviation ranged from 0.5% to 12.0%. According to accumulation index of heavy metal,the environmental baseline values of heavy metals Cd,Hg,As,Pb,Cr,Cu,Ni,Zn increased to different degrees relative to the regional background values of the monitoring points in regional surface soil. The increasing change rate was less than 50%,which was not significant. The cumulative index of environmental baseline value of heavy metals Cd,Hg,As,Pb,Cr,Cu,Ni and Zn was 1.5,1.2,1.0,1.1,1.0,1.0,1.0,and 1.0,respectively. Among them,the environmental baseline value of heavy metal Cd is slightly accumulated compared to the regional background value,indicating that the soil heavy metal Cd has been disturbed by a certain degree of human factors,but the impact is small. The heavy metal Hg had slight risk of accumulation,and the heavy metals As,Pb,Cr,Cu,Ni,Zn had no obvious accumulation.