Based on the theory of self-determination and from the internal perspective of employees, this paper explores the mechanism of thriving at work and proactive personality between servant leadership and innovative behavior. By analyzing the data of 309 Internet enterprises" employees, the results show that servant leadership has a significant positive impact on innovative behavior. Thriving at work partly mediates the relationship between servant leadership and innovative behaviors. Proactive personality positively moderates the relationship between thriving at work and innovative behavior. Moreover, proactive personality can moderate the mediated effect of thriving at work in the relationship between servant leadership and innovative behavior.