Abstract: In the late 1920s，Du Yuesheng, the Shanghai "Tycoon" who building up a great fortune through trafficing opium and opening casinos，began to get involved in finance sector. Du Yuesheng and Shanghai bankers went through a process from non-interference to association. Make benefits in both sides is the essence of making friends between them.With the gang forces，based on political relations,and with flexible means，Du Yuesheng successfully got involved into the bank sector and made deep personal friendship with Qian Xinzhi and XU Jiqing. Du Yuesheng played a role of “government mouthpiece " between Kuomintang and Shanghai bankers. He and Shanghai bankers had a very long period of time to become allies with Nanjing National Government, and their centrifugal accelerated the collapse of the Kuomintang.

Key words: Du Yuesheng, Shanghai bankers, Relationship changing, Association means, Role