Enterprise social media (ESM) is increasingly applied in modern enterprises to promote knowledge sharing and social intereactions among employees, and has an important potential for enhancing employees’ creativity. However, it is still unclear whether ESM can help boost employee creativity, and the technical design factors that cast ESM as a creativity support system needs investigation. To fill this research gap, this study constracts a research model based on the affordance lens to examine the influences of association and visibility affordances of ESM on employees’ perception of creativity. The moderating role of job autonomy in the relationship between ESM affordances and employees’ perceived creativity is further explored. Conclusions and implications of this study will be discussed.