The present invention relates to a power grid maintenance engineering reserve management system. Compared to the prior art, the defect is solved that power grid maintenance engineering reserve management information cannot be effectively controlled. A reserve project application management procedure is configured to fill in the form with a maintenance project plan, perform project budget accordingto the maintenance project plan and generate a proposal for the project and send the proposal for the project to a reserve project review procedure; and the reserve project review procedure is configured to perform query, approval and reporting of the proposal for the project and perform approval, price and fee checking, cost review and cost approval operations of the maintenance engineering. Thepower grid maintenance engineering reserve management system can achieve power grid maintenance engineering reserve management, can improve working efficiency and accuracy of reserve management, andcan effectively avoid problems of reserve management caused by a large project data volume, many resource channels and frequent change.