Abstract: Aiming at the pollution of heavy metal pollution in soil, heavy metals of Liuhe River surrounding farmland in Chengde city was surveyed using the combination of field investigation and indoor analysis. The characteristics of heavy metals content in soil of farmland were studied and pollution assessment was carried out by single factor index method and Nemerow index. The results showed that, the heavy metals contents were not exceeded the limit of Chinese farmland environmental quality evaluation standards for edible agricultural products, but the contents of Cd, Zn and Ni were accumulated in different degrees in soil. The soil of this area was not polluted, and the original planting mode, planting method and irrigation method could be continued.

Key words: Liuhe River, farmland soil, heavy metals, survey, Chengde city