Abstract: In recent years, emergencies have had an impact on the supply and price stability mechanism of urban living materials, resulting in shortage of materials and soaring prices, which exposes the poor operation of China’s urban emergency supply chain and other problems. As important subjects of urban emergency supply chain, the behavioral strategies of government emergency departments, logistics platform enterprises, material guarantee enterprises and urban residents will directly affect the final effect of urban living materials emergency supply. Based on this, this paper uses a quadrilateral evolutionary game model to explore the evolutionary rules of the construction and operation of the urban emergency supply chain coordination mechanism in China. At the same time, numerical experiments are conducted to simulate and analyze the evolutionary stabilization strategy. The results show that the active participation of government emergency departments, the efficient operation of logistics platform enterprises, the move-in of material preservation enterprises, and the platform procurement by city residents are the key factors to achieve the evolutionary equilibrium of the system. Therefore, the government emergency department should use subsidies, penalties and other policy tools to guide multiple parties to participate in the construction of synergistic mechanisms, so as to better cope with the impact of various emergencies and ensure “the smooth circulation, production and supply” of living materials.

Key words: emergencies, urban emergency supply chain, coordination mechanism, quadrilateral evolutionary game