Abstract: The progress of preparation of nanomaterial with ultrasound，microwave，electric field，magnetic field to improve the structure and photocatalytic activity of the nanometerial is reviewed. The combination of the process of nanomaterial with external field assisted photocatalytic degradation of organic compounds is introduced. Finally，the application prospects and the research directions of external field are presented.

摘要： 介绍了超声波、微波、电场、磁场等外加场辅助纳米材料的制备及对材料结构和其催化性能的影响，论述了物理场辅助光催化剂光催化降解有机物污染物的研究现状，最后展望了外加场的应用前景和发展方向。