The invention relates to the field of infrared temperature measurement, in particular to an electrolytic tank pole plate temperature monitoring system. The system comprises an infrared thermometer, a driving mechanism and a processing module, wherein the infrared thermometer is arranged above an electrolytic tank; the driving mechanism comprises a motor and a cradle head; the motor and the cradle head are used for driving a scanning mirror of the infrared thermometer and the infrared thermometer to rotate so as to realize scanning of each pole plate of the electrolytic tank; an acquired infrared optical signal is converted into an electric signal by the infrared thermometer and then output to the processing module; the driving mechanism is used for outputting a turn signal of the motor and the cradle head to the processing module; the processing module is used for processing the electric signal into temperature information and calibrating the pole plate at the signal with abnormal temperature. The short-circuit phenomenon in the electrolysis process is detected through the infrared thermal imaging technology; the entire process is automatic; the defects caused by manual detection are effectively avoided; the detection efficiency is greatly improved.