论述火灾报警系统（FAS）在城市轨道交通运营中的重要作用。对我国地铁设计中地铁换乘站FAS的设计进行总结，提出地铁换乘站FAS联动设计的思路，包括独立设计方案和延续设计方案。实践表明，这两种方案可有效地解决换乘站FAS系统间的火灾联动。

The important function of fire alarm system in metro is discussed． Design projects of fire alarm systems in interchange stations are summarized． The idea of fire joint action is presented which includes independent and continuous schemes． Both of the schemes are effective to solve the problem of fire joint action in interchange stations．