To　make　the　effluent　total　phosphorus　reach　the　real-time　standard　in　wastewater　treatment　process　(WWTP),　an　effluent　total　phosphorus　control　strategy,　based　on　fuzzy　neural　network　(FNN),　is　proposed　to　control　the　biochemical　phosphorus　in　this　paper.　First,　the　manipulated　variables,　based　on　the　mechanism　analysis　of　biochemical　phosphorus　removal　process,　were　considered　as　the　external　carbon　(EC)　and　dissolved　oxygen　(DO)　transfer　coefficient.　Second,　an　FNN-based　process　controller　was　designed　to　control　the　effluent　total　phosphorus.　And　a　gradient　descent　algorithm　was　applied　to　adjust　the　parameters　of　controller.　Finally,　the　proposed　FNN-based　process　controller　was　tested　on　the　benchmark　simulation　model　No.　1　(BSM1)　to　evaluate　its　effectiveness.　The　results　demonstrated　that　the　proposed　FNN-based　process　controller　can　guarantee　the　standard　discharge　of　effluent　total　phosphorus.　The　results　show　that　the　FNN-based　effluent　total　phosphorus　controller　can　ensure　that　the　total　effluent　total　phosphorus　is　discharged　and　has　a　good　control　effect.　©　All　Right　Reserved.