Support chain is a research hotspot in the field of equipment support， lacking method support in the model construction. This paper drew on theories such as supply chain， modern logistics， systems approach and summarized the concept of aerospace equipment support chain. It analyzed the relationship between it and the related network chain information system， understood and grasped its characteristics， and promoted their integration. The paper proposed a model construction method “from business practice to abstract expression and from quantitative analysis to link optimization”， which was realized through five steps， such as “business combing， element setting， structure mapping， demand matching， and optimization and reconstruction”. It provided support for the theoretical application of the aerospace equipment support chain.