Abstract: China is managing to incorporate hydrogen energy into the terminal energy system and complementing it mutually with electricity under the targets of carbon peak and carbon neutrality, which will be the main body of terminal energy consumption in the future. Breakthroughs in the core technologies such as large-scale electrolytic hydrogen production from renewable energy and efficient and reliable power generation from fuel cells are urgently needed. The solid oxide fuel cells（SOFCs） with an all-solidstate ceramic structure, fuel flexibility, high power generation efficiency, and modular operation can be widely used in stationary power fields, including large power stations, distributed power generation, and small household cogeneration. They can also guarantee the stability and reliability of the power system in the present coal-based power generation system and the future new power system with a high proportion of renewable energy. The solid oxide electrolysis cells（SOECs） with no precious metals, high efficiency, and low energy consumption can not only produce hydrogen but also convert and utilize CO2 to realize carbon cycling,which will be a vital direction of electrolytic hydrogen production in the future. They can also store energy when there is excessive power. Developing efficient energy conversion and storage technologies based on solid oxide cells（SOFCs and SOECs） can lay a foundation for the construction of new power systems. At the same time, it is conducive to optimizing the energy structure, driving industrial transformation and upgrading, and promoting the low-carbon revolution in energy.