The invention discloses an operating benefit evaluation method for a power grid enterprise power selling company belonging to the technical field of comprehensive evaluation of operating efficiency ofthe power grid company power selling company. The method combines the order relationship method with the entropy weight method to weighting the operational benefit evaluation index. Firstly, based onthe improved matter-element combination weighting model, comprehensive evaluation is carried out on the operating efficiency of the power grid enterprise power selling company, and the calculated maximum comprehensive correlation degree is taken as a comprehensive evaluation result, and the operational benefit evaluation level is determined on this basis; the comprehensive evaluation data is usedas input of LSSVM subjected to IPSO optimization; and quick comprehensive evaluation of the operating benefit of the power grid enterprise power selling company is achieved through machine training.The method is adopted to comprehensively evaluate the operating benefit of the power grid enterprise power selling company, thereby obtaining a relatively effective and reliable evaluation result; a new idea is provided for the comprehensive evaluation of the operating efficiency of the power grid enterprise power selling company; the artificial intelligence algorithm is introduced on the basis ofthe traditional comprehensive evaluation method; and automatic operation and quick evaluation can be realized.