The invention relates to a fault wave-recording device key parameter remote configuration method based on a reliable transmission network; the method comprises the following steps: 1, allowing a transformer station wave-recording device to connect with a data network access switch through an Ethernet port, and to connect with a wave-recording main station data communication server through a electric power scheduling data network, wherein the data communication server is connected with the an internal network switch through the Ethernet, and an application work station is connected with the internal network switch; 2, using a network communication ping order to detect a channel on the application work station, and to test a channel between the wave-recording main station and the transformer station wave-recording device, wherein the tests are remotely configured; 3, starting remote configuration software on the application work station so as to remotely configure the transformer station wave-recording device in order. The method uses the electric power system scheduling data network with high reliability and strong safety to remotely configure various recording parameters of the fault wave-recording device, thus effectively improving the fault wave-recording device operation efficiency, and providing important meanings for electric power system safety and stable operation.