Abstract:Under the background of digital economy, there is a general trend that commercial banks has adopted various financial technologies (fintech) to meet their customers' diversified financial needs. First, we compare the three main concepts of the integration of digital economy and financial industry, thus clarifying the research scope of commercial banks and financial technology applications. Then, the paper uses econometric software to analyze the journals from Chinese and English databases between 2012 and 2022, and indicates the hotspots. Also, based on the context of banking industry reports by Python text mining method, this paper summarizes four core topics: business innovation, banking competition, risk management and governance system, and rebuilds a new research system with details. Lastly, the paper summarizes some possible research directions in the future of commercial bank-fintech application from three practical aspects including industrial upgrading, financial inclusion and financial stability. We try to broaden the research boundary of bank-fintech application, promote the better integration of fintech into the business expansion and innovation of commercial banks.