Abstract: Abstract：Under the background of mixed operation, cross-border competition and differentiated customer needs, service modularization became a new option to improve innovation performance and enhance competitive advantage for financial enterprises. Accompany with service modularization, the organizational transformations direction was also a key issue. This study proved the existence of a positive impact from service modularization to innovation performance with empirical methods. On this basis, the positive mediation effect of organizational modularization on service product modularity was true, while the negative mediation effect on service process modularity is false. This study participated to recent research dialogues on the "mirror hypothesis", and helped us to understand the intrinsic links among product modularization, process modularization and organization modularization. It was also offered a better comprehension on the relationship on technical innovation and managerial innovation.