Abstract: Nuclear power is a clean, low-carbon, safe and efficient baseload energy source. Its position in China's energy system is escalating gradually. It is an indispensable energy for achieving China's carbon neutrality target and possesses vast potential for carbon emission reduction. Nevertheless, as of now, nuclear power has not been incorporated into China's carbon trading market and other market-oriented policy tool systems for low-carbon transition. Its value in carbon emission reduction awaits further realization. To explore the feasible mechanisms for integrating nuclear power into China's market-oriented policy tool system for low-carbon transition, this study systematically summarizes the factors and potential influences that prevent nuclear power from being included in China's low-carbon transition market-oriented policy tool system. Further, based on the calculation of the carbon reduction benefits that nuclear power can exert at different stages of China's carbon neutrality process, it is contended that integrating nuclear power into China's market-oriented policy tools for low-carbon transition is not only conducive to the realization of the carbon neutrality goal, but also beneficial for saving investments in the power system.