The invention discloses an equipment maintenance management method and system and a computer readable storage medium, and the method comprises the steps: determining key equipment and non-key equipment, and obtaining the maintainability and reliability parameters of each key equipment; quantitative simulation analysis is carried out on the maintenance activity of each key device, and an optimal active maintenance strategy and key maintenance parameters are determined; according to the result of the quantitative simulation analysis, determining an optimal maintenance plan which enables the sumof the maintenance costs of all the devices maintained by adopting the active maintenance strategy not to exceed the active maintenance budget and the sum of the maintenance costs of all the devices maintained by adopting the passive maintenance strategy to be minimum, and obtaining a maintenance strategy which should be adopted by each device; and generating an equipment maintenance task according to the optimal maintenance plan and the equipment repair request record. Expert experience analysis is replaced by computer-aided scientific analysis and calculation, the result objectivity is ensured, and the workload of maintenance plans is reduced.