关键词: 供应链协调, 联合契约, 突发事件, 随机需求

Abstract: Emergencies can cause huge fluctuations in the market based on stochastic demand, resulting in the instability of the supply chain system and breaking the original coordination. So, the countermeasures for supply chain coordination under disruption are constructed and the Revenue-Sharing-Two-contract（RS-TT） contract is established. The research shows that the combined contract can achieve supply chain coordination before the emergency, but after the emergency, the original contract does not play a coordinating role. Therefore, the original contract is improved and the improved contract can be verified through the example analysis make the supply chain reach the global optimal state and has anti-emergencies.

Key words: supply chain coordination, joint contract, emergencies, stochastic demand