[Objective] The risk of groundwater pollution was evaluated, in order to provide a simple and effective new method for groundwater pollution forecast and risk assessment of both similar construction projects and enterprises' independent environmental impact assessment.[Methods] A solute transport model based on the mathematical model of solute transport was established to predict the pollution levels of COD_Mn and Ni. And a risk assessment method for groundwater protection was developed to evaluate the groundwater contamination risk.[Results] After 100 d of a sudden accident, the maximum migration distance of COD_Mn was 11.6 m, for Ni, it was 10.8 m, having 8.8 m and 8.0 m spreads beyond the boundary of this factory, respectively. The monitor well W₂ was determined as higher pollution risk level, and W₃ as middle pollution risk level.[Conclusion] Pollutants such as COD_Mn and Ni in the groundwater diffuse rapidly, affect water quality seriously, so that track monitoring should be strengthened and the impermeability should be checked regularly.