Abstract: Lanzhou New Area has been given the strategic mission of "an important economic growth pole in the Northwest", but can this old policy "innovation" still exert policy effects and realize the "curve overtaking" in the development of underdeveloped areas? In order to clarify this issue, this paper collected panel data of 15 provincial capital cities from 2005 to 2019 through the synthetic control method, and used the establishment of the Lanzhou New Area in 2012 as a quasi-natural experiment to test the economic growth policy effect of the establishment of the Lanzhou New Area. The empirical results show that the establishment of the Lanzhou New Area has indeed promoted the growth of the regional economy, and this conclusion is robust, indicating that the old policy "innovation" of setting up a national-level new district can still be used as a tool for "overtaking on corners" in underdeveloped regions. Economic growth, but there is still a certain gap between the development of Lanzhou New Area and other state-level new areas, indicating that policy innovation requires matching policy infrastructure, and they need to be built and improved in the future.

摘要： 兰州新区被赋予了“西北地区重要经济增长极”的战略使命，然而这种旧有的政策“创新”还能够发挥政策效应，实现欠发达地区发展的“弯道超车”吗？为了廓清此问题，本文通过合成控制法，收集了2005-2019年15个省会城市的面板数据，以2012年兰州新区的设立为准自然实验，检验了设立兰州新区的经济增长政策效应。实证结果表明：兰州新区的设立确实带动了地区经济的增长，且这一结论具有稳健性，说明设置国家级新区的老政策“创新”依然可以作为欠发达地区“弯道超车”的工具带动地区经济增长，但兰州新区与其他国家级新区的发展仍存在一定的差距，表明政策创新需要与之匹配的政策基础设施，未来需要建设、完善它们。