The invention discloses a multistage scheduling method based on integral optimization. Three-level scheduling plan service processing characteristics of national, provinces and provinces are combined.By calling the overall optimization function considering the national provincial dispatching plan information and constraints, judgment and analysis on whether the national provincial dispatching plan has constraint conflicts or not are achieved, a corresponding adjustment scheme is given, the capacity of coordinating and dispatching among national, provincial and provincial multi-level dispatching is improved, and the three-level dispatching resource overall planning and optimization effect is enhanced.