Abstract: With the rapid popularization of new energy vehicles,the number of power lithium batteries in China is increasing day by day,the rising price of battery raw materials and the pressure on the environmental impact of a large number of discarded batteries are increasing,and the recycling of decommissioned power lithium batteries has also been put on the agenda. China’s power lithium battery recycling industry has a good development prospects,This paper reviews the recycling process of decommissioned power battery cathode materials,focuses on the regeneration and repair process of cathode materials,analyzes the shortage of existing recycling systems,and finally forecasts the development of power battery recycling.