改革开放以来,我国各主要港口迅猛发展,本文在我国五大港口群激烈竞争的背景下,以长三角港口群为主要研究对象,用数据包络分析方法对港口及港口城市的效率进行研究,分析了2011年长三角港口和港口城市技术效率和规模效率状态,并计算出港口对港口城市内部经济带动作用,进一步定位各港口功能,最后给出政策建议。 Since the reform and opening up, all major ports in our country have developed rapidly. Under the background of the fierce competition among the five major ports in China, this paper takes the port group in the Yangtze River Delta as the main research object, and uses data envelopment analysis to study the efficiency of port and port cities In 2011, the technical efficiency and economies of scale of the ports and port cities in the Yangtze River Delta were calculated. The port’s role in driving the internal economy of port cities was calculated, and the function of ports was further located. Finally, policy recommendations were given.