The　existing　micro-filtration　flux　models　are　described　in　three　sections.　Firstly,　the　development　of　the　concentration　polarization　model　or　the　force　balance　model　is　reviewed　based　on　the　back-diffusion　and　lateral　migration　of　particles　changing　with　process　parameters.　Secondly,　the　blocking　mechanisms,　the　Darcy＇s　law　and　their　development　are　introduced　based　on　the　adsorption　of　particles　in　membrane　pore　or　the　characteristics　of　deposition　of　particles　on　membrane　surface.　Thirdly,　the　combined　model　which　takes　into　account　the　interaction　of　different　factors　is　reviewed.　Meantime,　the　potential　future　directions　of　predicting　micro-filtration　membrane　flux　model　are　discussed.