The invention provides an intelligent electric charge depositing method and system. The intelligent electric charge depositing method and system are applied to a main server, intelligent electric meters and a user terminal which are in communication with one another. The intelligent electric meters comprise a main meter and a secondary meter which are in communication with each other. The intelligent electric charge depositing method comprises that the main meter obtains power utilization information of a secondary meter user and sends the power utilization information to the main server; the main server works out electric charge data in dependence on the power utilization information, generates two-dimensional code information used for depositing electric charge, and returns the two-dimensional code information to the main meter; after monitoring operation for scanning the two-dimensional code information, the user terminal enters an electric charge depositing interface, after receiving the electric charge depositing amount input by the user, the user terminal sends the electric charge depositing amount to the main meter; and the main meter sends the depositing amount to the main server. Through the above design, the process that the user directly scans the two-dimensional code information on the main meter to deposit electric charge for the secondary meter is achieved, the electric charge depositing operation is simplified, and the intelligent electric charge depositing method and system are more convenient and practical.