Aminopropyl　groups　were　used　to　functionalize　the　pore　channels　of　periodic　mesoporous　organosilicas(PMOs)　by　the　post-grafting　method.　The　final　materials　were　investigated　by　means　of　XRD,　TEM,　solid-state　NMR,　N-2　adsorption　and　Elementar　Analysis.　The　results　show　that　bridging　groups　in　the　framework　do　not　cleave　and　amino　groups　are　attached　covalently　to　the　pore　wall　of　periodic　mesoporous　organosilica　after　functionalization.　The　mesoscopic　order　remains　good　with　increasing　aminopropyl　groups　coverage　up　to　25mol%.　The　surface　area,　pore　volume　and　pore　size　tend　to　decrease　as　the　concentration　of　APTMS　increases,　but　the　materials　with　25mol%　aminopropyl　groups　still　preserve　a　desirable　pore　structure,　with　surface　area　of　604m(2).g(-1),　pore　volume　of　0.62cm(3).g(-1)　and　sharp　pore　size　distribution　centered　between　4.5nm　and　5nm.　Aminopropyl-functionalized　PMOs　facilitates　absorption　of　(HAuCl)　-complex.