Biological　manganese　removal　technology　has　garnered　attention　for　its　eco-friendliness　and　efficiency.　This　paper　employs　bibliometric　analysis　to　systematically　evaluate　research　advancements　in　this　field.　Current　research　focuses　on　manganese-oxidizing　bacteria　(MOB)　and　biogenic　manganese　oxides　(BioMnOx),　yet　several　knowledge　gaps　persist.　One　such　gap　is　understanding　the　intricate　interspecific　interactions　within　microbial　communities　involved　in　manganese　oxidation.　Apart　from　the　relatively　in-depth　studies　on　MCOs-mediated　BioMnOx,　the　role　of　other　enzymes　participating　in　manganese　oxidation　during　the　manganese　oxidation　process　has　been　inadequately　investigated.　Furthermore,　studies　on　the　structure　and　morphology　of　BioMnOx　resulting　from　indirect　oxidation　are　lacking.　Future　studies　should　address　these　gaps　by　investigating　biochemical　pathways　and　enzymatic　systems　responsible　for　Mn(II)　oxidation　and　how　they　influence　formation/functionality　of　manganese　oxides.　This　study　provides　valuable　insights　into　guiding　the　future　development　of　biological　manganese　removal　technologies.