Resource saving, environment protection and green safety are becoming the mainstream factors in current packaging developments in the world. In order to conform to the developing trends in packaging industry, the traditional classical metal packaging has provided a revolutionary product of polymer-coated steel in the early 90s of last century. The constitution of original materials, structure characteristics, production process, can-making performance and its application prospect about the polymer-coated steel are briefly described and summarized. The unique advantages of polymer-coated steel could meet the various demands in the 21st century packaging and would trigger off a green revolution in the application field of metal packaging for food and beverage in near future.