The invention provides a method and a device for acquiring electric power dispatching plan data and relates to the technical field of electric power. The method comprises the following steps: basic data of grids in an electric power dispatching plan is acquired; types of the grids in the electric power dispatching plan are judged, and associated factors corresponding to the types of the grids are acquired, wherein the types of the grids comprise grids at receiving ends and grids at sending ends; additional data corresponding to the associated factors and the types of the grids is acquired; the basic data and the additional data are subjected to matching and splicing operation on the basis of a topological structure of the grids, and the electric power dispatching plan data of the grids is obtained. The electric power dispatching plan data acquiring efficiency and accuracy can be improved.