Ductile iron materials for wind power castings play an important role in the wind energy industry, and their development status and trends have attracted much attention. As a material with high strength, high toughness and corrosion resistance, nodular cast iron has become one of the first choices for wind power castings, and its advantages include good castability, strong machinability and good comprehensive mechanical properties. There are many factors affecting the properties of ductile iron materials for wind power castings. This paper summarizes the development status of ductile iron castings for wind power and the main problems in production. The effects of chemical composition, trace elements and spheroidizing inoculation methods on the microstructure and properties of ductile iron materials for wind power are emphatically analysed. Finally, the challenges and future development directions of ductile iron castings for wind power are proposed.