In order to study the change of heavy metal content in soil during the cultivation of Panax
quinquefolium L, the soil of 1~4 years in Wendeng area was selected as the sample. The contents of
heavy metals in the sample were determined. The results showed that there was no correlation between
soil heavy metal content and planting years. The content of heavy metals reached the value of Soil envi?
ronmental quality Risk control standard for soil contamination of agricultural land.