Abstract: The aviation technology product is a complex product system,whose production needs a different strategy.This article introduces the theory of modulation,and indicates that the modular strategy is one extremely effective product strategy for the aviation technology product system.The key is to distinguish the standard information and the non-standard information of the product system.The PDM system is the data management system of the aviation product,whose use makes the complex aviation technology product have dynamic and open frame.It is a typical modular strategy.