This article expounds the problems like how the chemical water treatment system of the exhaust-heat boiler ensures the hydrogen conductivity of the steam and how it ensures that the quality of water vapor is quickly up to standard during the hot,warm and cold quick starts of the gas-steam combined cycle unit,to provide relevant data and experience for quick starts of similar units.%针对燃气-蒸汽联合循环机组快速启动中，余热锅炉化学水系统在机组热态、温态、冷态启动过程中如何保证蒸汽的氢电导率和启动阶段水汽品质快速合格等问题进行分析，为同类型机组快速启动提供相关数据和经验。
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