The invention provides a condensed water waste heat recycling system of a flue gas white-removing device. The system comprises a boiler, a steam turbine, a temperature and pressure reducer, a steam-flue gas heater, a steam type lithium bromide unit, a deaerator, a feed water pump, a hot water pump and a condensate pump. The high-temperature high-pressure steam is divided into two paths through thesteam turbine, one path of the high-temperature high-pressure steam enters the temperature and pressure reducer to be mixed with condensed water of the steam-flue gas heater, steam becomes low-quality steam after waste heat of condensed water is recycled, the other path of the high-temperature high-pressure steam is supplied to steam users through a town heating pipe network, the low-quality steam is divided into three paths, one path of the low-quality steam enters the steam type lithium bromide unit for refrigeration so as to meet the annual cooling load requirement of a data center nearbya power plant, another path of the low-quality steam enters the steam-flue gas heater to heat flue gas so as to become condensed water, and the last path of the low-quality steam which is redundant low-quality steam enters the deaerator to be used as heating steam for recycling.