Endothermic nanofluid fuel is a new type of fuel that has the potential to solve the problem of overheating hypersonic aircraft engines.In order to explore the cracking performance of endothermic nanofluid fuel and provide reference for subsequent research,this article first introduces the dispersion stability mechanism of nanofluid fuel and outlines its preparation and methods to improve stability.Secondly,the research progress on the cracking of endothermic nanofluid fuels is reviewed.The key factors affecting cracking are analyzed from various aspects such as nano additives,organic protective ligands,reaction mechanisms and pathways.Finally,the future development trend of endothermic nanofluid fuels is proposed.