Intermediate　products　of　biological　nitrogen　removal　process,　nitrate　and　nitrite,　could　be　used　as　electron　acceptors　for　phosphorus　removal.　This　study　investigated　the　effects　of　nitrite　on　phosphorus　uptake　in　anaerobic/oxic　(A/O)　biological　phosphorus　removal　process.　The　results　indicated　that　in　addition　to　oxygen　and　nitrate　(DPBNa,　Denitrifying　Phosphorus　removal　Bacteria　with　nitrate　as　electron　acceptor),　to　some　extent,　nitrite　can　also　serve　as　electron　acceptor　to　achieve　the　nitrite　denitrifying　phosphorus　removal　(DPBNi).　The　quantity　and　rate　of　phosphorus　uptake　of　DPBNi,　however,　were　evidently　lower　than　those　of　DPBNa.　The　nitrite　existed　in　anoxic　reactor　made　no　difference　to　the　quantity　and　rate　of　denitrifying　phosphorus　removal.　But　it　would　reduce　the　consumption　of　nitrate.　Moreover,　the　data　showed　that　the　aerobic　phosphate　uptake　of　DPBNi　was　lower　than　that　of　anaerobic　phosphorus-released　sludge　in　traditional　A/O　process.　However,　there　was　no　much　difference　between　these　two　kinds　of　sludge　in　terms　of　the　total　phosphorus　uptake　quantity　and　the　effluent　quality.