A method for intercommunicating address book information between different networks is provided, which includes the following steps: an interworking request carrying address book information is received, in which the interworking request comes from a network address book system other than a Converged Address Book (CAB) system; the address book information is converted according to an address book format supported by a server of the CAB system; the converted address book information is sent to the CAB system. A device and a system for implementing the method are further provided.