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There are two levels of overhead economy, First Air City economy, that is the core of the airport, the development of air passenger, cargo, logistics, airport shopping, leisure, tourism, business and other airport-related industries, thereby enabling the airport and nearby become a multi-functional economies. Such as around Los Angeles airport hotel, convention venues, many car rental companies, travel business to become an important transit point for the. This is a typical airport economy; Second, regional economic engine, that is the hub airport as an important gateway to the region, promote regional economic development, which also includes two levels: the use of the advantages of the establishment of the international ports or airports Airport Free Trade Zone, Bonded Logistics Park, the formation of bonded warehousing, logistics, transit, logistics and distribution, international procurement, exhibition display, export processing and other industrial clusters bonded extension; t