In　order　to　find　a　model　solution　to　simulate　actual　extracellular　polymeric　substances　(EPS)　solution　in　terms　of　filterability　behavior,　a　series　of　experiments　were　conducted　in　a　dead-end　unstirred　cell　with　0.1　mu　m　polyvinylidene　fluoride　membranes　using　single/　binary　mixtures　consisting　of　sodium　alginate　(SA),　bovine　serum　albumin　(BSA)　and　humic　acid　(HA).　It　can　obtain　that　the　presence　of　BSA　and　SA　is　a　necessary　condition　for　model　the　filtration　behavior　of　the　actual　EPS　solution.　Meanwhile,　compared　the　actual　EPS　solution　with　binary　mixtures　model　EPS　solution　can　find　that　BSA/SA=140/58.3　and　SA/HA=107/28.5　can　exhibit　the　similar　filtration　behavior　as　actual　EPS,　while　BSA/HA　are　far　from　that　of　actual　EPS　solution.　The　suitable　type　and　combination　of　simulated　solution　were　determined　to　improve　the　consistency　with　EPS　solution　in　actual　MBR　system.