在粉末材料的应用中发现，随着粉末颗粒的减小，当达到纳米级时会产生光、电、表面、体积等效应，即在光、电、磁、热力学和化学反应等许多方面表现出一系列的优异性能，因此，纳米级粉末材料成为材料领域追求的新目标。根据作者的研究工作与文献资料，对用湿法制备纳米级氧化铝粉末进行了较为系统的阐述，并指出了其应用前景。 In the application of powder materials, it has been found that with the reduction of powder particles, light, electricity, surface, volume and other effects are produced when the nanoscale is reached, ie in many aspects of light, electricity, magnetism, thermodynamics and chemical reactions A series of excellent performance, therefore, the nano-powder material to become the new goal pursued in the field of materials. According to the author’s research work and literature, the preparation of nano-sized alumina powder by wet method is systematically described, and its application prospects are pointed out.