中文摘要：

临空经济区的发展受到内部和外部动力因素的影响，前者包括机场流量、运营效率和产业集群，后者包括区域开放度、经济总量和产业结构等。利用理论模型分析了内部因素的作用，但对国内24个临空经济区进行实证后发现，我国仍停留在以外部动力为主、内部动力为辅的阶段。其中，航空客运量和机场效率的正向促进作用非常明显，货运量的影响则不显著。临空产业仍处于集群的初始阶段，因而对临空经济区的推动力较小。

英文摘要：

Two groups of factors impact the airport economy： external and internal ones. The former includes the airport flow, operating efficiency and airport industrial clusters. The latter includes the regional openness, eco- nomic aggregate and industrial structure. Theoretically speaking, the internal factors are the most important power. However, the data of 24 samples show that the development of airport economic zone in China is dominated by the external power, supplemented by the internal factors. The passenger traffic and the airport efficiency are positive to the airport economy, while the freight volume is indistinctive. The clusters are so weak that it affects the economy faintly.