Performance　of　phosphate　removal　by　iron-aluminum　composite　adsorbent　is　studied　under　different　crystallization　temperature.　Influences　of　pH　value　and　coexisting　ions　of　CO32-　to　performance　of　adsorption　phosphate　removal　are　investigated.　Results　show　that　phosphorus　removal　performance　of　the　adsorbent　is　influenced　remarkably　by　crystallization　temperature.　Phosphorus　removal　performance　of　the　adsorbent　prepared　at　lower　temperature　has　better　performance　than　that　at　higher　temperature.　The　main　reason　of　decreasing　adsorption　performance　is　that　the　specific　surface　area　is　reduced　by　crystal　structure　change　caused　by　increasing　crystallization　temperature.　Phosphorus　removal　performance　of　the　adsorbent　prepared　at　lower　temperature　is　less　influence　by　pH　value.　The　adsorbent　shows　good　adaptability　to　water　quality.　Phosphorus　removal　performance　of　the　adsorbent　is　played　strongly　inhibitory　action　by　coexistent　ion　CO32-.　The　opposite　negative　interference　action　should　be　avoided　in　practical　applications.