In this paper, JS commercial bank investment banking business as the research object, mainly using literature research and case study method for analysis. First of all, it introduces the basic theories of investment banking: range economy theory; portfolio theory; asset specificity theory; financial function theory. Then combined with these related theories, the paper studies the current situation of JS commercial bank investment banking business development, respectively from four aspects: the development process of investment banking business; the structure of investment banking department; the development background of investment banking business; the development status of investment banking business. Finally, combined with the advantages, disadvantages, opportunities and threats of their own development, this paper summarizes the practical problems encountered in the development process, such as product innovation ability, marketing promotion ability, risk control ability and other deficiencies. This paper analyzes and summarizes the causes of these problems: the lack of accurate understanding of investment banking business, the lack of necessary talent reserve of commercial banks, the backward marketing and promotion concept of commercial banks, the backward risk control concept and technical level of commercial banks. Then, based on the experience of Germany, this paper puts forward the development strategy for JS commercial bank's investment banking business: firstly, market segmentation and business innovation should be strengthened by improving marketing promotion ability and innovation strength; secondly, risk control ability should be strengthened by effective measures and risk management strategies in practical work; finally, the "direct operating working group" of provincial bank should be constructed ”Strengthen investment bank talent reserve and training and establish a reasonable performance and salary incentive mechanism to strengthen team building and evaluation incentive mechanism.<br>
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