HEMC firstly developed high entropy superalloys with excellent corrosion resistancehigh temperature strength, which are far superior to commonly used stainless steelgreat candidates for catalyst bed materials of hybrid rocket engine. For rocket nozzle, NA-1NA-2 advanced refractory alloys are developed according to the combustion condition of the rocket engine with the technology for designing refractory high entropy alloysthermodynamics-assisted phase diagram simulation software, which are expected to meet the needs for domestic rocket development.