The advent of the big data era is both an opportunity and a challenge for financial personnel. It has changed the accounting process and strengthened the function of accounting posts to a certain extent. Financial transformation has become an important topic for enterprises to improve their management level and competitiveness. It is necessary to explore the trend and path of financial transformation. Taking the big data application of Handu Group as an example, this paper analyzes the impact on financial organizations and financial personnel, and provides a reference for the transformation of enterprise’s financial personnel. Big data will cause changes in organizational structure and personnel structure. Accountants should not only change their ideas, but also constantly improve their work quality and efficiency with the help of informatization. Enterprises should promote the transformation and development of accountants to meet the new requirements of enterprise’s financial management in the context of cloud computing. Financial personnel of enterprises should comply with the development of the trend of the times and make full use of various learning channels to supplement the skill requirements of big data and cloud background for financial work.