GMS( Groundwater Modeling System) is an international famous three-dimensional integrated groundwater numerical modeling software system and characterized by its multivariable modules,all-around functions,wide applycations,intuitional modeling process,friendly operation interface etc. This article detailed the general modeling process of GMS applied in the contanminant transport in the groundwater environment: first,use the MODFLOW module to build the groundwater flow model; second,use the MT3 DMS module to...