Digital transformation has been clearly incorporated into the 14th Five Year Plan and written into the Fintech Development Plan（2022-2025）. How to identify the key factors for improving digital capabilities and enable business development with digital is becoming more and more important. This paper fully refers to the research results of digital transformation at home and abroad，based on the development status and research data of the financial industry，starting from the characteristics and attributes of the financial industry，constructs a digital transformation model of the financial industry，and analyzes three typical cases：the construction of Unionpay App network payment platform，the construction of “Beacon Platform” of Agricultural Bank of China Digital Risk Control Center，and Huatai Securities’ cloud roadshow services for enterprises based on the digital platform. The research shows that consolidating the digital infrastructure，improving the level of data application，and building a customer-oriented ecosystem service system are the key for improving the digital capability of the financial industry.