The problem of environmental pollution and resource depletion caused by highly developed industry forces most enterprises in China to carry out green economy transformation.Green supply chain management can effectively improve the environmental problems of traditional supply chain,but its development is seriously influenced by the external government subsidy and the asymmetry of internal information structure.Therefore,the study of supply chain information structure and sharing with full consideration of government subsidies has a great significance for eliminating the information barrier in supply chain under the guidance of the government and realizing the maximization of the whole benefit of the supply chain,and then promoting the substantial development of the green supply chain.Based on this,this paper studies the sharing strategy of demand forecasting information of green supply chain,which takes government subsidies as the main factor and considers different subsidy subjects.Firstly,the paper defines the green supply chain,the subsidy participants and their interest relations by literature review in order to determine the main subsidy objects and subsidy methods.Secondly,aiming at two different subsidy objects,the three-party game model of centralized decision-making,no information sharing and information sharing among government,manufacturer and retailer is constructed and solved by reverse induction method.It studies the influence of demand information sharing on equilibrium decision and expected profit of supply chain subjects.Thirdly,based on the expected profit of the manufacturer and the retailer,the coordination model of demand information sharing is constructed from the perspectives of the external government and internal supply chain in order to improve the enthusiasm of the retailer to share demand information.Finally,the game model and coordination strategy were simulated,and the value of demand information sharing as well as the change trend of profit of each subject and social welfare under the sharing strategy were intuitively observed from the perspective of practice,and then the corresponding countermeasures and suggestions were put forward for each subject.The research results show that the demand information sharing game model among the government,manufacturers and retailers accurately express the behavior relationship of demand forecast information sharing among supply chain entities.When the demand forecast information is relatively optimistic,Demand information sharing has no impact on government decisions,but it can effectively influence the decisions of manufacturers and retailers.Furthermore,manufacturers can always benefit from demand information sharing,while retailers’ expected profit,social welfare and overall profit of supply chain do not always increase because of demand information sharing.When retailers are unwilling to share demand information,the external coordination strategy of the government and the internal coordination strategy of the supply chain can effectively compensate the profit loss of retailers,so as to improving their enthusiasm to share demand information and providing a more reliable decision basis and countermeasure suggestion for each subject in demand information sharing. |