【Result】Cd content in root, stem and leaf showed significantly positive correlation with Cd concentration in soil. The Cd accumulation in different parts of cassava presented shoot>leaf>root. Stems accumulated the highest Cd content, followed by leaves and roots. At 25 mg/kg Cd concentration in the soil, to the roots showed 0.22 mg/kg Cd content, violating the food safety standard （GB 2762-2005, Cd≤0.1 mg/kg）. Safe critical value Cd was identified as 1.28 mg/kg for cassava plantation soils. At the concentration of 13.23 mg/kg Cd in soil, tuberous root of cassava were found safe for eating purpose. 【Conclusion】The Cd accumulation in cassava presented shoot>leaf>root. At the concentration of 13.23 mg/kg Cd in soil， tuberous root of cassava was found safe for eating purpose.