近年来梯度特异介质表面成为电磁特异介质领域的重要分支与研究热点。回顾了该领域最近的部分研究成果，包括利用特异介质表面实现传播波与表面波的完美转换以及转换效率分析，制备光波段特异介质表面实现高效宽带奇异反射，建立一套模展开理论研究特异介质表面散射问题，利用反射式特异介质表面实现光会聚，以及分析比较反射式和透射式特异介质表面的优劣等。基于以上梯度特异介质表面的研究介绍，最后展望了该领域的研究方向。

Recently, gradient meta-surface has become an important and hot sub-branch in electromagnetic metamaterial research. In this paper, we review some recent progresses in this area, such as using gradient meta-surfaces as a bridge to link propagating waves and surface waves and the conversion efficiency issue related to such conversion, high efficiency broadband anomalous reflection by optical gradient meta-surfaces, the development of a mode-expansion theory for studying the scattering properties of inhomogeneous meta-surfaces, flat meta-surfaces to focus electromagnetic waves in reflection geometry and the comparison of reflective and transmissive gradient meta-surfaces. Finally, we present our perspectives on the future direction of this research field.