Though　bacterial-microalgal　consortium　(BM)　system　showed　significant　advantages　for　the　mariculture　wastewater　treatment,　how　the　high　saline　to　the　degradation　of　nitrogen,　phosphorus　and　organic　component　shift　need　to　be　further　investigated.　In　this　study,　three　systems　including　the　microalgae　system　(MA),　activated　sludge　system　(AS)　and　BM　were　parallel　operated.　The　mariculture　wastewater　treatment　performance　and　the　shifts　of　soluble　microbial　products　(SMPs)　components　were　compared　among　the　above　systems.　The　result　showed　that　the　highest　removals　of　NH4+-N　(92.78%),　PO43−-P　(79.47%)　and　total　organic　carbon　(TOC)　(81.67%)　were　obtained　in　the　BM　system.　This　result　demonstrated　that　the　confederate　effect　between　bacteria　and　microalgae　showed　satisfying　mariculture　wastewater　treatment　performance　compared　to　the　individual　MA　or　AS　system.　In　terms　of　the　SMP　production,　the　high　salinity　resulted　in　much　SMP　accumulation　(178.89　mg/L　of　protein　and　71.35　chancinmg/L　of　carbohydrate)　in　the　MA　system.　Fortunately,　the　high　salinity　inhibition　effect　was　dramatic　reduction　with　less　SMP　accumulation　in　the　BM　system.　The　EEM　result　showed　amounts　of　macromolecular　organics　of　protein　(aromatic-like　substances　and　tryptophan-like　substances)　were　the　main　components　in　the　MA　system,　which　were　much　higher　than　that　in　the　AS　and　BM　system.　This　indicated　the　macromolecular　protein-like　matters　could　not　be　removed　absolutely　based　the　individual　MA　system.　Comparatively,　the　composition　of　SMP　was　shifted　by　the　bacterial-microalgal　consortium　with　less　humic-like　matters　and　tryptophan-like　matters　production　in　the　BM　system.　The　less　SMP　release　had　advantage　to　the　stable　operation　of　the　bacterial-microalgal　consortium.　Hence,　the　bacterial-microalgal　consortium　contributed　to　a　much　stable　micro-ecological　environment　formation　for　enhancing　the　high　salinity　mariculture　wastewater　treatment　performance　©　2021