The　EPS　solution　extracted　from　the　activated　sludge　of　sequencing　batch　reactors　(SBRs)　by　the　formaldehyde-NaOH　extraction　method　was　filtered　in　dead-end　cell　with　0.1　mu　m　PVDF　micro-filtration　membrane　under　various　operating　conditions,　and　the　filtration　behaviors　of　actual　EPS　solution　were　investigated.　The　experimental　results　show　that:　firstly,　the　membrane　filtration　mechanism　is　governed　by　cake　filtration,　and　the　cake　is　compressible;　secondly,　the　cake　specific　resistance　increased　with　the　increase　of　transmembrane　pressure　(TMP)　and　decreased　as　the　concentration　increased;　thirdly,　all　operating　conditions　had　a　significant　influence　on　the　cumulative　filtrate　volume　(CFV)　of　actual　EPS　solution;　finally,　the　CFV　increased　with　the　rise　of　temperature　and　TMP,　but　decreased　as　EPS　concentration　increased.　The　sequence　of　influence　degree　of　operating　conditions　is　the　temperature　(38.1%)　＞　the　TMP　(34.8%)　＞　the　EPS　concentration　(27.1%).　A　quantitative　regression　relationship　between　the　CFV　and　the　temperature　(T),　TMP　(Delta　P)　and　EPS　concentration　(C)　was　obtained　as　follows:　CFV　=　-3.7　x　10(-8)C　+　5.79　x　10(-7)T　+　1.27　x　10(-4)Delta　P