Covalent organic frameworks (COFs) represent an emerging class of crystalline porous polymers with high porosity, good stability, and adjustable structure, and their excellent characteristics lay a solid foundation for electrocatalysis. This review systematically introduces the design principles of the catalytic sites in two-dimensional (2D) COF-based electrocatalysts and analyzes the relationship between 2D COF structure and their electrocatalytic performances. In particular, the recent progress in the field of 2D COFs as electrocatalysts is comprehensively summarized. Finally, we discuss the current shortcomings and challenges on tailoring 2D COF for high-performance electrocatalysts in details, and look forward to promoting more researches on 2D COF-based electrocatalysts.

共价有机骨架（COFs）代表了一类新兴的结晶多孔聚合物，具有高孔隙率、良好的稳定性和可调节的结构，其优异的特性为电催化奠定了坚实的基础。本综述系统地介绍了二维 (2D) COF 基电催化剂中催化位点的设计原则，并分析了 2D COF 结构与其电催化性能之间的关系。特别是，全面总结了二维 COF 作为电催化剂领域的最新进展。最后，我们详细讨论了当前为高性能电催化剂定制二维 COF 的不足和挑战，并期待推动更多基于二维 COF 的电催化剂的研究。