The　sorption　behaviour　of　Sr　into　granite　was　studied　with　the　presence　or　absence　of　typical　colloids　(goethite,　bentonite　and　humic　acid).　A　batch　technique　was　used　to　analyse　the　influencing　process　of　colloids　and　key　factors.　Moreover,　scanning　electron　microscopy　and　Fourier　transform　infrared　spectroscopy　were　used　to　characterize　granite　samples　before　and　after　the　batch　experiments.　The　experiments　showed　that　the　presence　of　colloids　promotes　the　sorption　of　Sr　in　the　broken　granite　system;　when　goethite,　bentonite　or　humic　acid　(HA)　was　present,　the　sorption　capacity　percentages　were　1.8,　2.13　and　1.93　times　higher,　respectively,　than　those　in　the　granite　only　system.　As　the　initial　Sr2+　concentration　increased,　the　sorption　of　Sr　increased,　but　the　sorption　percentage　decreased;　the　sorption　percentage　reached　a　maximum　at　pH　=　7　and　decreased　as　the　acidity　or　alkalinity　of　the　solution　increased.　The　sorption　of　granite　may　be　related　to　the　interstitial　water　of　the　hydroxyl,　quartz,　and　feldspar,　the　intergranular　water　of　granite　groups　and　the　water　molecules　attached　to　the　granite.　Moreover,　the　surface　of　the　granite　sample　was　rougher　after　the　sorption　experiment.