The invention discloses an account-card-object consistency management method and system for power grid asset equipment, and a storage medium. The method comprises the following steps: when an equipment registration instruction is obtained, distributing a unique equipment identity card code to the equipment, registering equipment information associated with the generated equipment identity card code for newly purchased equipment on the basis of an asset registration template which unifies and standardizes the composition range and the card building granularity, and printing on the basis of theequipment identity card code to obtain a card pasted to the equipment; when an updating instruction containing the equipment identity card code is obtained, updating the registered equipment information based on the equipment identity card code; when a logout instruction containing the equipment identity card code is obtained, logging out the equipment identity card code and all corresponding equipment information; when the registered equipment information is newly added, changed or deleted, updating and calculating the latest assets based on the latest equipment information, and the problem of account, card and object consistency can be solved.