为推动我国掺氢天然气管道的发展，综述了目前含氢气环境下管道钢氢脆的研究成果，总结了温度、压力、掺氢比等运行条件对钢材氢脆的影响，分析了钢材强度、微观组织、氢陷阱等材料性质与管道钢氢脆行为之间的联系，归纳了预防和抑制管道钢氢脆行为的方法。笔者认为，当前亟待解决的科学技术问题包括进一步探究掺氢天然气管道环境下不同运行条件对管道钢氢脆行为的影响规律;确定掺氢天然气管道的安全运行温度、压力、掺氢比等关键参数;建立不同服役条件下掺氢天然气管道输送的安全评价方法，完善掺氢天然气管道与现役管道相容性评价体系;形成掺氢天然气管道的设计规范和相关标准;开展气体抑制剂和阻氢涂层等抗氢脆方法的评价。

Hydrogen energy has been vigorously developed in recent years, but excessive transportation and storage costs have become a key issue in restricting the development of hydrogen utilization. Blending H2 into existing natural gas long- distance pipelines is the potential best way to transport hydrogen on a large scale, cost-effectively and efficiently. However, H2 can induce hydrogen embrittlement of pipeline steel, which seriously restricts the safe operation of hydrogen-blended natural gas pipelines.