A continuous cryogenic pellet injection system for tokamak fueling has been developed by a joint research team from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences. It overcame technical challenges related to cryogenic ice formation, pellet cutting and pellet launching. Cryogenic pellet injection is a cutting-edge technique in fusion research, where hydrogen isotopic gases are condensed into solid ice pellets, which are then accelerated and injected into plasma. This method offers deep particle injection and high fueling efficiency, making it a crucial technology for the future of fusion reactors. It is considered a key core fueling technology for next-generation fusion devices such as the International Thermonuclear Experimental Reactor (ITER), the China Fusion Engineering Test Reactor (CFETR) and the European Demonstration Fusion Reactor (EU-DEMO).