Accelerating the research and development of power battery recycling technology is an important path to achieve the standardised recovery and resourceful recycling of waste power batteries, therefore, it is of great significance to explore the government regulatory measures to stimulate the technological innovation of power battery recycling. Based on the Extended Producer Responsibility (EPR) system, a threeparty evolutionary game model is constructed consisting of thirdparty remanufacturers, power battery producers and the government, and the evolutionary strategies of the three parties under different stability conditions is simulated by using Matlab, and the impact of government regulatory measures is compared and analyzed on the evolution of strategies of thirdparty remanufacturers and power battery producers. It is found that: 1) the government’s implementation of power battery reuse technology R&D subsidy policy can effectively promote the thirdparty remanufacturers to actively invest in the power battery manufacturers to take the initiative to assume the responsibility of production extension; 2) the government’s subsidy to the thirdparty remanufacturers can significantly increase the willingness to actively invest in the R&D relative to the power battery manufacturers; on the contrary, the government adopts the appropriate punitive measures for the power battery producers, which is more capable of motivating them to take the initiative to undertake R&D. In contrast, the government’s adoption of appropriate penalties for power battery manufacturers is more likely to incentivise them to take the initiative to undertake the responsibility of R&D of recycling technologies.