The embodiment of the invention discloses a method and device for calculation of marketization electric quantity settlement of an electric power retail market. According to the embodiment of the invention, features of different contract plans are considered at an electric power retail market, it is considered whether the electric quantity settlement of retail contracts signed with users are related with a wholesale market or not, and the electric quantity settlement of deviation examination is considered, and the total revenue of the users can be obtained through a plurality of electric quantity settlement modes. The relatively general settlement calculation model is provided for the electric power settlement field, the model is simple in calculation flow, small in calculated amount and small in development difficulty, the intermediate result meaning of the calculation process is clear, and the calculation method is high in practicality.