This book starts from the application of technologies in financial institutions and financial regulators in China, and defines the concept and connotation of FinTech and SupTech in the form of topics, analyses the main problems in the development process, and discusses in depth the future development and regulatory tendency of FinTech and SupTech. In recent years, with the in-depth application and cross-domain integration of information technology in the financial world, FinTech has rapidly developed and has been widely applied, which brings us an important enlightenment: technical factors will bring fundamental changes for the development of the modern financial industry. While improving financial efficiency, it has an impact on the core financial problems such as information matching and mutual trust solving, making it urgent to improve financial supervision capacity and regulatory efficiency through information technology to effectively guarantee financial security. At present, many Chinese financial institutions have applied technologies to their daily operations and management, such as accurate customer identification, enhanced process tracking, intelligent marketing, and product process transformation, so as to simplify financial service processes and shorten service cycles. Meanwhile, the financial regulators in China, such as PBOC, CBIRC, CSRC, have also applied technologies to the area of financial regulation, in order to reduce the cost of regulation, and promote the efficiency and effectiveness of regulation. In General, this book both pays attention to practical application and theoretical, which is a useful reference book for theoretical research and practical work, and also helps readers to understand the application of technologies in financial institutions and financial regulators in China.