In this article, the research actualities of ultrafiltration membrane technology and their materials are studied. It analyzed the mechanism of membrane fouling which was the most obstacle of ultrafiltration membrane technology using in waterworks, and discussed the new progress about membrane fouling, by using raw water pretreatment, the difference methods of membrane cleaning, optimum operation conditions and so on. It reported the current application of ultrafiltraion membrane technology at home and abroad. Finally, the application of ultrafiltration membrane technology in waterworks was forecasted.