The invention relates to a power retail transaction settlement method, a terminal and a storage medium. The method comprises the following steps: S101, updating error accounting data of a settlement month according to error accounting data of a retail user; S102, updating error accounting data of the electricity selling company in the settlement month, obtaining a settlement object, if the settlement object is a retail user, executing S103, and if the settlement object is the electricity selling company, executing S104; S103, correcting the settlement bill of the settlement month according to the error accounting data of the retail user, and updating the error bill of the retail user through the corrected settlement bill; and S104, correcting the error settlement data of the electricity selling company according to the error bill of the electricity selling company, and updating the error bill of the electricity selling company according to the generated error bill. The settlement bill can be efficiently corrected, the efficiency is high, the consumed time is short, the labor cost is reduced, the settlement risk is reduced, and the efficient processing requirement of the power retail transaction is met.