Digital transformation， as a key corporate reform to adapt to the digital age， has a significant impact on business innovation practices. But how it affects micro-employee innovation is not well understood. In view of this， based on the perspectives of internal and external stakeholders， it included the digital transformation （corporate reform）， employee/customer involvement （stakeholder involvement）， corporate reputation （corporate identity signal） and employee’s innovative behavior （employee’s output） into the research framework and carried out two sub-studies， aiming at clarifying the cross-level influence mechanism of digital transformation on employee’s innovative behavior. Sub-study 1 focused on the internal employee perspective， and made an empirical analysis on the matching questionnaire data from two-stage 322 leader-employees of 30 corporates. It finds that： both digital transformation and employee involvement promote employee’s innovative behavior； employee involvement plays a partially mediating role between digital transformation and employee’s innovative behavior； corporate reputation positively moderates the relationship between digital transformation and employee involvement， and further moderates the mediating role of employee involvement. Sub-study 2 focused on the external customer perspective， and made an empirical analysis on the matching questionnaire data from two-stage 208 members of 4 virtual communities（including 22 sub-communities）. It finds that： both digital transformation and customer involvement promote employee’s innovative behavior； customer involvement plays a partially mediating role between digital transformation and employee’s innovative behavior； corporate reputation positively moderates the relationship between digital transformation and customer involvement， and further moderates the mediating role of customer involvement. These findings extend the research on the mechanism of digital transformation’s impact on micro-employee’s innovative behavior and provide practical insights for corporates to promote employee innovation by means of digital transformation.