Under the influence of the financial crisis, there is a great change in the structure of the world banking. China is less affected by the financial crisis, with the acceleration of the development of Chinese enterprises multinational, Chinese large commercial banks also speed up the internationalization, and there is a new wave of cross-border mergers and acquisitions in Chinese banking industry. This paper based on case study method, using event study and operating performance study, and using the Industrial and Commercial Bank of China buying the Standard Bank of South Africa and the China Merchants Bank purchasing the Hong Kong Wing Lung Bank as examples, to study the capital markets reactions for the merger announcement and changes in f...