Abstract: The technology characteristics and engineering data of natural draft cooling tower (NDCT) with flue gas rejection developed in Germany are analyzed. The NDCT with flue gas rejection can improve energy efficiency, simply flue gas system, and need not construct chimney and GGH heat exchanger. Power plant boiler air-introduced fan and FGD pressurized air fan can be united. Expenses of power plant construction are decreased. All of these can help reduce the cost of electricity-generating. It is important that the technology can increase the uplift height of gas after desulphurization, and thus reduce atmosphere pollution.