A remote transmission information judging method in an electric power dispatching system comprises a remote signaling signal judging method and a telemetering signal judging method. The remote signaling signal judging method comprises steps as follows: establishing remote signaling points, acquiring the remote signaling value of each channel, acquiring the state value of each channel, determining the state calculation value of each channel, judging whether the current channel is normal or not, determining remote signaling calculation values, prompting channel faults, judging whether the remote signaling point output value is 1 or not, determining that the remote signaling point output value is 1, determining whether the remote signaling point output value is 0 or not, prompting that the current remote signaling value is incredible, and the like. According to the remote transmission information judging method in the electric power dispatching system, spare channels are fully utilized, five channels between a master station end and station ends are used, meanwhile, a set of transmission remote signaling and telemetering information is acquired, all channel data participate in information state calculation, so that the acquired information is more reliable, and the transmission fault tolerance capacity and the information reliability are enhanced.