Consolidation　deformation　occurs　in　clay　liners　under　the　self-weight　of　wastes　at　a　simple　garbage　dump　or　dredged　sediment　dump,　which　leads　to　a　decrease　in　the　porosity.　However,　the　migration　of　contaminants　in　clay　liners　is　influenced　by　the　porosity.　Thus,　the　impact　of　consolidation　deformation　of　clay　liners　on　the　migration　of　contaminants　cannot　be　ignored.　Based　on　Biot＇s　consolidation　theory,　the　contaminant　migration　theory,　and　consideration　of　the　three　kinds　of　migration　mechanisms　of　convection,　diffusion,　and　adsorption,　a　one-dimensional　migration　model　of　contaminants　in　deforming　porous　media　was　established,　and　the　finite　difference　method　was　adopted　to　obtain　the　numerical　solutions　for　an　established　initial-boundary　value　problem.　The　impact　of　consolidation　pressure　on　the　migration　law　of　a　contaminant　was　studied.　The　results　show　that,　regardless　of　adsorption　modes,　different　consolidation　pressures　have　similar　impacts　on　the　migration　law　of　the　contaminant.　Namely,　over　a　certain　migration　time,　the　greater　the　consolidation　pressure　is,　the　smaller　the　migration　depth　of　the　contaminant.　The　results　also　show　that,　while　the　migration　time　increases,　the　impact　of　a　certain　increment　of　consolidation　pressure　on　the　variation　of　contaminant　concentration　with　the　depth　increases　gradually　and,　while　the　migration　depth　increases,　the　impact　of　a　certain　increment　of　consolidation　pressure　on　the　variation　of　the　contaminant　concentration　with　time　increases　gradually.　Copyright　©　2013　Editorial　Office　of　Water　Science　and　Engineering.