In the development process of large capacity and high parameter for direct air cooling units, the configuration scheme of feed water pump has become an issue for new projects to concern with, because of the quick increase of feed water pump power and the increasingly stringent water consumption indices. Through the analysis of configuration of domestic and international feed water pumps, the turbine driven is suggested to be the most efficient driving mode for feed water pump, which has a broad application prospects for direct air cooling units. Efficiency and water saving can be both improved in the switching mode of small turbine direct exhausting and water cooling, while indirect cooling mode with small turbine can also be adopted by 1 000 MW direct air cooling units. Finally, the results show that electric pump has the advantages of the least investment and flexible operation mode, as well as can use some new technologies, such as “speed-governing planetary transmission” and frequency conversion.