A method and apparatus for evaluate that development level of an interconnected region of a power grid are provided, Firstly, the index value is calculated based on the preset index and the obtained basic information of the interconnected area of the power network, and then the development stages of the interconnected regions are determined based on the index value and the pre-established development stage division model, Finally, the development degree of the power grid interconnection region is evaluated according to the development stage, and the evaluation result is accurate and has universal applicability, and the technical scheme provided by the invention is simple and clear, which provides a basis for further interconnection of different power grid interconnection regions..