With the advent of the era of big data, the commercial management activities of commercial banks are facing both new challenges and new development opportunities. In the increasingly fierce market competition, commercial banks must pay attention to enhance their core competitiveness, only in this way can they occupy a certain advantage in the fierce market environment. Therefore, commercial banks must accurately grasp the development opportunities brought by big data, and further strengthen the optimization of business management. The author explores and analyzes the impact of big data on commercial banks, and puts forward an effective way for commercial banks to optimize business management in the context of big data, hoping to contribute to the long-term development of commercial banks.