The　littering　of　nitrogen　into　water　bodies　has　led　to　several　adverse　effects　on　the　environment.　＇Nitrification-denitrification＇　is　still　a　prevalent　method　for　removing　nitrogen　from　water　bodies,　which　demands　high　energy　consumption　and　complex　operational　conditions.　In　recent　years,　MBS　has　attracted　much　attention　because　of　its　advantages　in　recovering　nitrogen,　emitting　oxygen,　and　capturing　CO2.　It　has　been　proven　that　light　is　the　top　factor　influencing　the　performance　of　MBS.　This　paper　will　critically　review　the　effects　of　light　parameters　on　nitrogen　removal　by　MBS,　and　the　nitrogen-removal　mechanisms　of　MBS　driven　by　artificial　illumination.　©　2023　by　the　authors.