On the basis of site investigation and data collection of a certain electro plating factory, the groundwater flow and solute transport coupled models were established by applying Visual MODFLOW 4.1 software, which was used to conduct a numerical simulation that forecast the transport process of Cr⁶⁺ in groundwater. The results show that contamination plume of Cr⁶⁺ transports with groundwater flow direction. Without control measures, in 3650 days, 19 wells for drinking would be contaminated, and the range of transport would be 52172 m², the maximum contamination would be 35.8 mg/L.