The invention discloses an electric charge checking system. The electric charge checking system comprises electric quantity query modules for querying the electricity consumptions of electricity users and a monitoring center, wherein each electric quantity query module performs data communication with the monitoring center and uploads queried electric quantity information to the monitoring center, and the monitoring center comprises an electric quantity obtaining module, an electric quantity obtaining time module, an electric charge calculating module, an electric quantity processing module and a database. The electric quantity obtaining module is used for obtaining the electric quantity information queried by the electric quantity query module and making the electric quantity information correspond to the electricity users in a one-to-one mode. The electric quantity obtaining time module is used for recording the time for obtaining the electric quantity information of the module. The electric charge calculating module is used for calculating the electricity costs of the electricity users according to the electric quantity information queried by the electric quantity query module and the time for obtaining the electric quantity information. The electric quantity processing module is used for sending the electricity consumptions of electricity users and corresponding electricity cost information to receiving terminals of the electricity users and making the electricity users know the electricity consumptions and the corresponding electricity cost information.