The invention relates to a remote emergency broadcast system control technology, in particular to a dual-tone-multi-frequency-signal-based remote emergency broadcast system control method and a dual-tone-multi-frequency-signal-based remote emergency broadcast system control device, which solve the problems of low reliability and overhigh system investment cost of the conventional remote emergency broadcast system control technology. The dual-tone-multi-frequency-signal-based remote emergency broadcast system control method is implemented by the following steps of: (1) dialing a telephone access number of an emergency broadcast system by using a publisher; (2) connecting an intelligent voice access module and an intelligent voice source processing module; (3) switching own broadcast channel of the intelligent voice source processing module from a conventional broadcast channel to an emergency broadcast private channel by using the intelligent voice source processing module; (4) realizing remote emergency broadcast; and (5) finishing once emergency broadcast. By the method and the device, the problems of low reliability and overhigh system investment cost of the conventional remote emergency broadcast system control technology are effectively solved; and the method and the device are suitable for the emergency broadcast in public emergencies or special emergencies.