Abstract:In view of the general modular theory, and in the situation of modular production network, this research probes into the logical connection among technological modularity, product modularity and product manufacturing process modularity, and further analyses the mediating effects of product innovativeness and maunifacturing agility in the path between three types of modular system and modular new product performance. Finally,a framework model of modularized new product performance in modular production network be founded. The study found that:in the situation of domestic modular new product developer dominated modular production network, technological modularity facilitates the development of product modularity, and product modularity advances the product manufacturing process modularity. Both product modularity and technological modularity significantly advance new product performance indirectly through product innovativeness.