Algal　extracellular　polymeric　substances　(EPS)　are　complex,　high-molecular-weight　polymers,　whose　physicochemical　properties　have　demonstrated　outstanding　efficacy　for　resources　recovery　and　wastewater　treatment.　In　this　study,　VOSviewer　and　CiteSpace　were　used　to　conduct　a　systematic　bibliometric　analysis　of　research　related　to　algal　EPS.　Based　on　keyword　co-occurrence　and　cluster　analysis,　the　primary　research　directions　focus　on　the　production　and　application　of　algal　EPS.　This　paper　delves　into　these　topics　in　detail,　taking　into　account　current　research　hotspots　and　gaps.　Algal　EPS　production　is　regulated　by　gene　proteases　and　influenced　by　environmental　stress.　The　composition　and　structure　of　EPS　can　be　modified　by　regulating　its　biosynthesis　through　the　quorum　sensing　system.　The　key　applications　of　algal　EPS　include:　(1)　serving　as　a　novel　flocculant　to　enhance　the　harvesting　of　algae　biomass;　(2)　promoting　the　formation　and　stable　operation　of　aggregates　in　the　algalbacterial　granular　sludge　process;　(3)　facilitating　the　removal　and　transformation　of　heavy　metals,　antibiotics,　and　other　pollutants　into　harmless　substances;　and　(4)　acting　as　a　carrier　for　the　marine　carbon　cycle,　which　aids　in　the　circulation　of　marine　materials.