Abstract: Under the intricate international and domestic environment, advanced manufacturing industry faces insecurity and instability problems such as broken chain due to lack of core and weak chain due to weak independent innovation. From the perspective of industry chain supply chain, this paper adopts differential game on the three-level supply chain consisting of suppliers, advanced manufacturers and sellers, and explores the impact of trilateral enhancement of security and stability efforts on the security and stability level, profit and related strategies of the advanced manufacturing industry chain supply chain under Nash model, Stackelberg model and cooperative alliance model, respectively. The results show that the higher the level of effort, the higher the security and stability level of the advanced manufacturing chain supply chain, and the level of effort is influenced by the market sensitivity coefficient, security and stability level influence coefficient, unit profit and effort cost coefficient; the higher the security and stability level, the higher the optimal profit of the advanced manufacturing chain supply chain; the advanced manufacturers will share the cost of security and stability activities upstream and downstream only under the condition of guaranteeing certain profit, and the proportion of cost sharing is proportional to the profit of advanced manufacturers; cooperative alliance is the best mode to improve the security and stability level of the supply chain of advanced manufacturing industry chain.

Key words: security and stability level, trilateral effort level, advanced manufacturing chain supply chain, differential game