In recent years, the nonperforming loan ratio to reflect bank risk-taking behavior is increasing within the environment of intensive competition. The relationship banking has the ability to closely monitor firm management over the course of the loan. This research tries to study the impact of relationship banking upon bank risk-taking behavior. Another important factor to explain bank risk-taking behavior is the corporate governance. Beside, we add some other items in this study to make the outcome more complete and proliferating. The empirical results provide evidence that the relation between multi-bank borrowing index and nonperforming loan ratio is positive and significant.