This study explores different perspectives on the definition of digital transformation on banking sector. Ultimately, to facilitate future research, we summarize several research techniques used in the literature reviewed. We set well-established selection criteria to select relevant literature from Scopus, the most recognized database. Based on the bibliometric information of the papers selected, we did a bibliometric analysis. Afterward, we reviewed the literature. The results of this study are There are mainly four findings. Firstly, according to the bibliometric analysis, literature about banking digital transformation is growing exponentially. Secondly, banking digital transformation is the use of new digital technologies to enable significant business improvements in augmenting customer experience, streamlining operations, or creating new business models with innovative breakthroughs that alter conventional banking practice. Thirdly, there are some financial reasons for implementing banking digital transformation which are to increase customer satisfaction, competitiveness, efficiency, and profitability. Finally, key dimensions of banking digital transformation involve individuals, processes, technology, content, and state, while the strategy for the successful banking digital transformation should consider technology, value creation, structural change, and financial aspects