Method and device for certificating phone privileges of broadcasting system

The invention belongs to the field of flood control broadcasting early warnings and provides a method and device for certificating phone privileges of a broadcasting system. The method comprises the following steps: when authorization phones are accessed, a processing unit opens an analog switch and notifies a data transmission unit; the data transmission unit sends voice verification instructions through the opened analog switch and receives verified passwords input by the authorization phone; the data transmission unit sends the received verified passwords to the processing unit to be verified, and when the verified passwords pass the verification, the processing unit opens a voice output channel. Privilege verification is carried out on the authorized phones of the broadcasting system again before broadcasting, and only when the phones of the broadcasting system pass the once-again verification before the broadcasting, the authorized phones of the broadcasting system can be allowed to conduct flood control