WDM环网以其灵活性、管理简单及生存性好等特点受到普遍重视。文章首先讨论了在进行WDM环网保护方式的设计中需注意的几个问题,并对目前可能有的几种WDM环保护方式作详细性能分析,并从不同得角度作了比较,从中得出了一些有益的结论。在此基础上,给出了进行WDM环网保护设计中应遵循的一些原则。所得出的结论对今后WDM环网保护方式的研究与设计都有一定的借鉴和帮助。 WDM ring network with its flexibility, simple management and good survivability and other characteristics of universal attention. The article first discusses several issues that should be paid attention to in the design of WDM ring network protection mode and analyzes several possible WDM ring protection modes in detail at present and compares them from different perspectives, Some useful conclusions. On this basis, some principles that should be followed in the design of WDM ring network protection are given. The conclusions drawn from this study will be helpful to the research and design of the WDM ring network protection mode in the future.