The invention discloses an optimization method for electric energy quality pricing in an electricity selling side release environment, and the method comprises the steps: obtaining an electric energyquality index, dividing an electric energy quality grade according to the electric energy quality index, and obtaining the initial electricity price of each electricity selling company according to the electric energy quality grade; obtaining the selection condition of the user for the electricity selling company; correcting according to a principle of selecting an electricity selling company withthe lowest average price to obtain a corrected electricity selling company condition selected by the user, and inputting the corrected electricity selling company condition selected by the user intoa preset constructed user income optimization model and an electricity selling company income model to obtain user income and electricity selling company income; and solving the user income and the electricity selling company income by adopting a particle swarm algorithm in combination with a distributed optimization algorithm, and outputting an optimal value. The method has the advantages that under the environment that the electricity selling side is released, prices are discussed according to the quality of electric energy, and a balance point of benefit games between users and electricityselling companies is given.