[Objective] To analyze the contaminant transport of stormwater recharge in deep confined aquifer.[Methods] The groundwater flow modeling and solute transport simulation were studied by the Modflow and MT3DMS

which are two modules of groundwater modeling system (GMS)

in the fourth confined aquifer of Tianjin City. And chloride ion(Cl-)

a common index

was used as object of the study. Four different kinds of the mass concentrations of Cl- and the amounts of recharge water were simulated and analyzed.[Results] When the amount of recharge water increased 4 times and the solute concentration remained constant

the area of certain Cl- concentration in the groundwater would increases 1.44 times; when the solute concentration increased 2 times and the amount of recharge water remained constant

the area of certain Cl- concentration in the groundwater would increases 0.92 times.[Conclusion] Both the amount of recharge water and the mass concentration influence the transportation of Cl- obviously

and the influence of the former tends to be greater than the latter. Meanwhile

either increasing the amounts of recharge water or reducing the solute concentrations are conducive to transferring and diffusing of Cl-.