According to the close economic and social ties and the development experience of the international metropolitan area，nine cities，including Shanghai，Suzhou，Wuxi，Changzhou，Nantong，Jiaxing，Ningbo，Zhoushan and Huzhou，are determined to form the Shanghai metropolitan area. As the most developed and highly developed metropolitan areas in China，nine cities have made active explorations in promoting the development of metropolitan areas，and have made great achievements，leading the high-quality development of China’s metropolitan areas. In the future，Shanghai metropolitan area still needs to follow the rule of urbanization and the general experience of the evolution and development of metropolitan area，and accelerate the innovation in infrastructure，public services，ecological environment，industrial division and other aspects.