The invention discloses a battery sorting parameter determining method giving consideration to battery non-uniformity and ageing co-evolution. The method is characterized by comprising: determining aninitial value of sorting parameter deviation range for an energy storage battery pack; constructing a battery non-uniformity and ageing co-evolution process simulator, and using the simulator to perform simulation on energy storage batteries to obtain simulation results so as to obtain simulated battery characteristic parameters and ambient parameters of energy storage batteries; subjecting the simulated battery pack to availability evaluation, and judging whether the battery pack meets the energy storage requirement of an application scene; performing feedback adjustment on the sorting parameter deviation range of the energy storage battery pack according to the availability evaluation results of the battery pack. The method of the invention has the advantages that personal customized sorting of batteries is performed in tight conjunction with the charging-discharging characteristics of a battery application scene, and reuse sorting scientificness and grouping success rate are increased for decommissioned power batteries.