高速道岔是高速铁路轨道结构的关键，其结构与状态对列车运行安全和运行品质具有重大影响。文章介绍了高速道岔设计参数和平面线形，扣件、岔枕、道岔转换系统等部件主要结构特征，高速道岔设计理论，相关技术条件及取得的创新成果，对于中国高速铁路道岔的进一步研制、试验验证及推广使用具有重要的指导意义。

High-speed turnout serves as a vital part of track structure for high-speed railway, and its structure and condition play an important role in train running safety and quality. In this paper, design parameters and linear plane of high-speed turnout, main structure characteristics of components (including fastening, turnout sleeper, switching system etc.), design theories of high-speed turnout, relevant technical requirements as well as innovative achievements are described, which will offer remarkable guiding significance for the further R&D, test, verification and wide-use of high-speed turnout in China railways.