根据多年从事公路隧道设计和施工的实践与经验，对公路隧道低压配电系统各种保护方式的安全性和适用性，以及存在的不足和解决方法进行了综述和比较，并结合公路隧道环境及公路隧道低压配电系统特点，对保护方式的选择和做法进行分析与探讨，提出了自己的观点。对今后公路隧道低压配电系统保护方式的选择应用，提高系统的安全性和实用性，有一定的现实意义。

Based on several years’ working practice and experience in highway tunnel design and construction, the authors summarize and compare the security and applicability of several protection measures of lowvoltage distribution system as well as the remaining problems and solutions in highway tunnel. Moreover, they put forward their own view about the selection of protection measures according to the analysis and discussion on the highway tunnel environment and lowvoltage distribution system characteristics. This paper has some practical significance for the future protection measures selection of lowvoltage distribution system in highway tunnel as well as the enhancement of system security and applicability.