Driven by the motive of the competition in the international financial markets, the strengthening of internal management of exchange, the trend of large mergers and acquisitions transactions appeared which will have long-term development to the global financial industry and the relationship among world cities.This mainly reflected in: competition of international financial centers will be even more intense; international influence of cities that participate in the exchange merger will be improved.Under the background of the rapid development and internationalization of China's financial markets, cities of China can get some ideas from the context of the phenomenon of mergers and acquisitions in the west financial markets on how to drive the development of city and financial fields. <<