The utility model discloses a real-time monitoring device for an RKEF process submerged arc furnace, which comprises a furnace body, temperature monitoring boxes are arranged outside the furnace body at equal intervals, the furnace body is provided with a position adjusting seat, a monitoring heat conduction block penetrates through the interior of the furnace body, so that the temperature in the furnace can be contacted more closely, the temperature is conducted to a heat conduction plate piece and enters the interior of a temperature monitoring cavity, and the temperature monitoring box is arranged in the position adjusting seat. The stable monitoring probe rod in the temperature monitoring cavity carries out temperature monitoring, so that monitoring detection can be carried out in time under the condition that temperature conduction is not reduced, the temperature can be displayed on the real-time display screen, the accuracy of temperature monitoring of the furnace body can be guaranteed, the problem of temperature attenuation in the temperature monitoring detection process is avoided, and the service life of the furnace body is prolonged. And the temperatures of the upper end, the lower end and the middle end of the furnace body can be monitored and detected, so that the accuracy of the temperature value is further ensured, and a worker adjusts the temperature value.