This　paper　was　concerned　with　the　adsorption　equilibrium　and　kinetics　of　L-tyrosine　on　732　cation-exchange　resin　in　a　batch　adsorber.　The　effects　of　the　mixing　rate,　the　initial　pH　value,　the　radial　of　the　resin　and　the　concentration　of　the　feed　on　the　iron　exchange　process　were　studied.　The　equilibrium　agreed　well　with　Henry　Law　under　the　conditions　of　experiments.　For　eliminating　the　effect　of　film　mass　transfer　resistance,　the　mixing　rate　was　set　not　less　than　350　rpm.　There　was　no　significant　effect　to　the　process　when　pH　value　of　the　feed　was　between　2.5　and　5.5,　and　the　existence　of　Na+　could　reduce　the　exchanging　capability　of　the　resin.　Under　the　condition　that　the　external　fluid　film　mass　transfer　resistance　was　eliminated,　the　different　calculating　methods　of　the　average　radius　made　little　effects　to　the　result.　The　surface　diffusion　coefficients　of　the　process　with　different　initial　concentrations　of　the　feed　were　calculated　by　the　batch　adsorption　model.　The　result　showed　that　the　magnitude　order　of　DS　and　the　initial　concentration　of　the　feed　were　irrespective.