It is a complicated system engineering that the aeronautic equipment maintenance information sharing system which is involved in many factors is established. It can promote the efficiency of aeronautic equipment maintenance information sharing if value chain idea introduced in the construction. On the basis of the value chain model of aeronautic equipment maintenance support information sharing system is established, value-added management model was built and the value of the model was analyzed. It is indicated that the life-cycle maintenance information sharing system based on the value chain theory can effectively improve the economic benefit and military benefit.