Abstract: With the rapid increase of the installed capacity of new energy in power grid,the demand for the construction and renewal of energy storage facilities is increasing.The harmless treatment of decommissioned lead-acid batteries from power grid has become an urgent problem to be solved in power grid environmental protection.Firstly,the application and waste disposal status of lead-acid batteries in power grid energy storage were introduced.Then,combined with the environmental harm of waste lead-acid batteries,the role of the existing lead centralized recovery process in the mass disposal of returned lead-acid batteries was summarized.Finally,the development direction and application prospect of lead enrichment technology in lead dispersion recovery and trace recovery were analyzed.Suggestions were put forward for the key links of the harmless treatment technology of lead-acid batteries returned,which provides a reference for avoiding the environmental protection risks brought by the large-scale application of new energy storage.