Abstract: The content of some typical heavy metals including Cu, Pb, Zn and Cr of farmland soil around Hohhot city were detected through field investigation and laboratory analysis in this paper. The pollution comprehensive assessments on soil heavy metal were made based on index of land accumulation method and potential ecological risk index method. The results showed that the content of Cu, Pb, Zn and Cr in suburban agricultural soil from Hohhot city was 60.76,145.99,80.49,34.71 mg/kg,respectively, and the mean content of Cu,Zn and Cr was below the second standard limit value of ＂China environmental quality standard for soils＂. The PREI value was in the range of 35.02 -132.96, which indicated a low ecological risk. The land accumulation index showed that a slight pollution of Zn and Cr occurred in Hohhot suburban agricultural soil, and there was moderate pollution of Cu and Pb, which should be caused by the attention of the authorities.