The utility model discloses a tubular GGH system for thermal power factory, this thermal power factory includes the condensate system. This tubular GGH system includes the gas cooler, a smoke gas heater, hot media water, and condensate water expansion loop, wherein, this condensate water expansion loop includes the condensate water entry, the condensate water export, hot media water entry and hot media water export, this gas cooler and this hot media water entry fluid intercommunication, this steam heater and this hot media water export fluid intercommunication, hot media water is at this gas cooler, circulation flow between condensate water expansion loop and the flue gas heater, the condensate water of different temperatures can be through this condensate water expansion loop of the condensate water entry flow direction in this condensate system, thereby heat or cool off this hot media water, and then through this condensate system of the condensate water export flow direction. The utility model discloses a tubular GGH system simple structure, the investment economizes, and control and regulative mode are simple, have energy -conserving effect.