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This invention provides a method for the tiered utilization of retired batteries from energy storage power stations, relating to the fields of electrochemical energy storage and the tiered utilization of retired batteries. The steps of this invention are as follows: S1, rapidly assess and classify the consistency of retired batteries, eliminating unusable batteries; S2, perform grouping operations on the remaining retired batteries to obtain the optimal solution; S3, assemble the retired batteries into new battery packs according to the optimal solution; S4, perform online self-healing equalization control operations on the battery packs; S5, adjust the self-healing strategy parameters; S6, track and monitor the self-healed batteries. The beneficial effects are: voltage and internal resistance are corrected to avoid interference from ambient temperature; the objective optimization function can improve grouping efficiency; the tiered self-healing strategy improves battery repair speed; self-healing strategy parameter updates ensure that the selected parameters are suitable for the corresponding batteries; the tiered tracking strategy can reduce monitoring costs; and long-term and short-term evaluations can avoid the problem of false repair successes.