H2S　is　one　of　the　major　odorous　gases,　which　is　harmful　to　human　health,　and　pollutes　the　environment.　A　process　of　adsorptive　removing　H2S　by　activated　carbon　was　proposed.　The　mechanisms　of　desulfurization　by　activated　carbon　and　kinetics　of　mass　transfer　in　fixed　bed　adsorption　were　theoretically　studied.　To　predict　the　breakthrough　curves,　a　fixed　bed　desulfurization　reactor　mathematical　model　was　established　and　simulated　by　using　COMSOL　Multiphysics　software.　Meanwhile,　the　breakthrough　curves　were　studied　and　plotted　according　to　the　experimental　data.　The　simulation　result　shows　that　the　breakthrough　curves　under　the　different　conditions　are　in　well　agreement　with　that　of　the　experimental　data.　Moreover,　the　effect　of　the　space　velocity,　temperature　and　the　feed　gas　content　on　the　adsorption　capacity　were　investigated.