The long-term stable growth of China's export-oriented economy has brought a historical opportunity for the rise of Chinese law firms. The volume of trade and investment between China and the United States and between China and Europe is huge, and the quantity and quality of mergers and acquisitions have increased year after year. China's lawyers and law firms are gradually moving towards a deeper level of internationalization. Thus, what kind of latest economic growth brought to the international business of law firms? What can Chinese law firms do to carry out international layout and deep cooperation with foreign law firms? What can foreign law firms do to take the opportunity of CAI to develop Chinese business and achieve high-quality cooperation with Chinese law firms?