正渗透是一种新型的膜分离技术，具有能耗低、膜污染小及回收率高等优点，近年来在国际上得到了广泛的关注。本文简要介绍了正渗透膜分离技术的基本原理，综述了正渗透膜分离关键技术驱动液与膜材料的最新进展，简述了正渗透膜分离技术的最新应用，展望了正渗透膜分离技术的重点研究方向。

Forward osmosis(FO)is a novelenvironmentally friendly membrane separation technique.In recent years, FO has drawn a lot of attentions because it possesses many advantages, including low energy consumption, low fouling propensity and high water recovery. In this paper, the principles of FO are introduced. Moreover, the key techniques (draw solutions and membranes) and application progresses are reviewed. At last, the research tendencies of FO are discussed.

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