Abstract: Microemulsification has been used as a new method for preparing nano-catalysts. In this paper，the principles，methods，affecting factors and separation method of preparing nano-catalyst by microemulsification are introduced and its application is reviewed. The development and innovation of this process are summarized.

摘要： 介绍了微乳液法制备纳米催化剂的工艺过程，阐述了微乳液法制备负载型纳米催化剂、无载体型纳米催化剂、分子筛及载体的研究进展，分析了制备过程中影响催化剂粒径大小及分布的因素，评述了微乳液法制备纳米催化剂的特点及发展方向。