A method for implementing a remote monitoring between a monitored interphone and a monitoring interphone, which is performed by the monitored interphone, wherein, the interaction between the monitored interphone and the monitoring interphone is based on the Digital Mobile Radio protocol, the method comprising: receiving a remote monitoring request from the monitoring interphone, wherein the remote monitoring request comprises target control information; replying acknowledgement information to the monitoring interphone, resolving the target control information, and selecting a transmitting mode; and entering a monitored state, starting automatically a transmission, and transmitting sound produced around the monitored interphone according to the selected transmitting mode, wherein, the target control information comprises a transmit interval, and the resolving the target control information and selecting a transmitting mode comprises: resolving the target control information and acquiring the transmit interval by the monitored interphone; judging whether the transmit interval is 0, selecting a first transmitting mode as a current transmitting mode in a case that the transmit interval is 0, and selecting the second transmitting mode as the current transmitting mode in a case that the transmit interval is not 0; in a case that the first transmitting mode is selected as the current transmitting mode, a transmit time is acquired from the target control information, and the transmitting the sound produced around the monitored interphone according to the selected transmitting mode is performed according to a transmitting duration and the transmit time; in a case that the second transmitting mode is selected as the current transmitting mode, a repeat times indicating the total number of periodical transmissions is acquired from the target control information, and the transmitting the sound produced around the monitored interphone according to the selected transmitting mode is performed according to a transmitting duration and the repeat times. receiving a remote monitoring request from the monitoring interphone, wherein the remote monitoring request comprises target control information; replying acknowledgement information to the monitoring interphone, resolving the target control information, and selecting a transmitting mode; and entering a monitored state, starting automatically a transmission, and transmitting sound produced around the monitored interphone according to the selected transmitting mode, wherein, the target control information comprises a transmit interval, and the resolving the target control information and selecting a transmitting mode comprises: resolving the target control information and acquiring the transmit interval by the monitored interphone; judging whether the transmit interval is 0, selecting a first transmitting mode as a current transmitting mode in a case that the transmit interval is 0, and selecting the second transmitting mode as the current transmitting mode in a case that the transmit interval is not 0; in a case that the first transmitting mode is selected as the current transmitting mode, a transmit time is acquired from the target control information, and the transmitting the sound produced around the monitored interphone according to the selected transmitting mode is performed according to a transmitting duration and the transmit time; in a case that the second transmitting mode is selected as the current transmitting mode, a repeat times indicating the total number of periodical transmissions is acquired from the target control information, and the transmitting the sound produced around the monitored interphone according to the selected transmitting mode is performed according to a transmitting duration and the repeat times. resolving the target control information and acquiring the transmit interval by the monitored interphone; judging whether the transmit interval is 0, selecting a first transmitting mode as a current transmitting mode in a case that the transmit interval is 0, and selecting the second transmitting mode as the current transmitting mode in a case that the transmit interval is not 0; in a case that the first transmitting mode is selected as the current transmitting mode, a transmit time is acquired from the target control information, and the transmitting the sound produced around the monitored interphone according to the selected transmitting mode is performed according to a transmitting duration and the transmit time; in a case that the second transmitting mode is selected as the current transmitting mode, a repeat times indicating the total number of periodical transmissions is acquired from the target control information, and the transmitting the sound produced around the monitored interphone according to the selected transmitting mode is performed according to a transmitting duration and the repeat times.