The　biogenic　iron　and　manganese　oxide　applied　were　gained　by　backwashing　from　the　biological　iron　and　manganese　removal　filter　columns.　The　research　reported　in　this　paper　focused　on　its　characteristics　and　adsorption-desorption　properties　on　phosphorous.　The　results　indicated　that　the　oxide　was　spherical　particle　polymer　with　a　developed　pore　structure　mostly　in　the　form　of　micropore,　with　a　specific　surface　area　of　285.6　m2/g.　The　adsorption　isotherm　could　be　well　described　by　Langmuir　equation　and　Freundlich　equation　with　a　correlation　coefficient　larger　than　0.9　and　a　high　adsorption　capacity　of　39.06　mg/g.　The　desorption　percentage　of　adsorbed　phosphorus　was　13.04%　in　a　neutral　electrolyte　of　KNO3　under　maximum　phosphorous　adsorption　conditions.　The　adsorption　enthalpy　change　ΔH0　was　positive,　which　indicated　the　adsorption　process　was　endothermic,　meanwhile　the　minus　Gibbs　free　energy　change　ΔG0　suggested　it　was　spontaneous.　It　was　found　that　the　phosphorous　adsorption　kinetics　fitted　pseudo-second-order　kinetic　models.　©,　2014,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.