The invention discloses a method for connecting a converged communication network with a master station. The method comprises the following steps that a converged communication network collects electricity consumption data information, and in addition, the electricity consumption data information and identity information of the converged communication network are transmitted to a firewall; the firewall of the master station checks the identity information of the converged communication network, and if the identity information of the converged communication network is valid, the firewall of the master station transmits the electricity consumption data information to the master station; the master station analyzes and processes data information transmitted by the converged communication network, and in addition, a control instruction and the identity information of the master station are sent to the corresponding converged communication network; the converged communication network checks the identity information of the master station, and if the identity information of the master station is valid, the converged communication network executes the corresponding control instruction sent by the master station. The method has the advantage that through the technical scheme that the firewall of the master station is used for identity verification of the converged communication network, and in addition, the two-way identity verification is adopted between the master station and the converged communication network, the connecting security of the converged communication network and the master station is effectively improved.