The invention provides a password resetting method and system for a digital currency wallet, and belongs to the technical field of wallet password resetting. The digital currency wallet password resetting method comprises the following steps of: S1, judging whether a created or imported wallet exists or not, if so, executing the next step, and if not, directly erasing all data related to the wallet, and then executing the step S4; S2, obtaining at least one memorial aid word of the existing wallet; S3, judging whether the input assistant words are matched with the assistant words in wallets ornot, if so, unlocking the global transaction password, then executing the step S4, and if not, prompting an information error; and S4, resetting the global transaction password. According to the method and the system, one set of the multiple sets of backup assistant words is matched to indicate that the user has the assistant words, the identity of the user is confirmed, and the user can be authorized to reset the global password under the condition that all wallet data are not cleared.