Chemical reaction in soil solution has some important effects on solute transport.Ion exchange and complexation reaction are the common chemical reactions observed in soil.An indoor leaching experiment was conducted to explore effects of the two reactions on solute transport.The traditional convection-dispersion equation (CDE) regardless of chemical reactions was simulated by CXTFIT,and a model coupled with ion exchange and complexation reaction was simulated by PHREEQC,a hydrologic geochemical software.Results show that the coupled model is more precise in simulation,which indicates that the coupled model is successful.