This paper investigates the optimal pricing strategies of domestic/imported electric vehicle manufacturer and the government’s optimal decisions by developing the game-theoretic models. The results show that the technology spillover caused by introducing IEVs into domestic markets can affect the profits of electric vehicle manufacturers and the government’s decisions on subsidies and tariffs. In addition, implementing the subsidy and tariff policies can help to improve the profit of the domestic electric vehicle manufacturer and the social welfare. Moreover, when the degree of technology spillover is relatively large, implementing the subsidy and tariff policies can also help to improve the consumer surplus.

本文通过发展博弈论模型，研究了国内/进口电动汽车制造商的最优定价策略和政府的最优决策。结果表明，将IEV引入国内市场引起的技术溢出会影响电动汽车制造商的利润以及政府的补贴和关税决定。此外，实施补贴和关税政策可以帮助提高国内电动汽车制造商的利润和社会福利。而且，当技术外溢程度较大时，实施补贴和关税政策也可以帮助改善消费者剩余。