According　to　the　key　roles　the　phosphorus　play　in　microorganism　and　considering　the　microbial　regrowth　phenomenon　of　drinking　water　in　water　supply　network,　a　viewpoint　on　improving　drinking　water　biostability　by　controlling　phosphorus　content　to　restrain　bacteria　growth　is　proposed.　From　the　aspects　of　existing　monitoring　method　of　phosphorus,　phosphorus　removal　effect　of　conventional　treatment　process　and　the　present　state　of　phosphorus　removal　in　water　treatment,　an　analysis　of　necessary　research　work　is　conducted　to　implement　the　proposal.　It　has　pointed　out　that　it　will　be　a　field　for　advanced　phosphorus　removal　from　drinking　water,　by　developing　new　and　highly　effective　coagulants　and　special　adsorbents　with　advantage　of　phosphorus　removal,　on　the　condition　that　the　existing　treatment　process　is　not　changed.