Abstract: This paper focuses on a three-level supply chain composed of a single supplier,a single manufacturer and a retailer who faces stochastic demand.It investigates the impact on three-level supply chain undey disruption,and then improves a price discount contract which has anti-disruption ability,and analyzes the distribution of profit among the entities.Finally,the paper gives an application by simulation.

Key words: three-level supply chain, disruption management, coordination mechanism, price discount contract, anti-disruptionability