With the development of renewable energy sources,emerging energy storage systems have received a lot of attention. Sodium-on batteries have attracted extensive attention in the field of large-scale energy storage due to their abundant sources, safety,low cost,environmental friendliness and ease of use.The cathode materials of sodium-ion batteries affect the key properties of the battery such as energy density,cycling performance and multiplication characteristics.Currently,three cathode materials for sodium ion batteries have entered the industrialization horizon,namely layered transition metal oxides,polyanionic compounds and Prussian blue compounds.This paper summarizes the classification,properties,and research progress of main cathode materials for sodium-ion batteries,and anticipates the prospect of the potential research.