The invention discloses a calcium carbide furnace conductive element fault early warning method, which is mainly characterized in that a Rogowski coil is adopted to measure the current of seven groupsof conductive clamps at the output of a transformer, the measured current is processed through a DSP (Digital Signal Processor) and then uploaded into a centralized control system or a portable controller upper computer via an RS485 communication and transmission signal converter, and corresponding current signal data of the conductive clamps is collected and recorded through upper computer software; the average current per hour per day Average(I-Hour) of the last month is collected to obtain the average current per day Average(I-Day) of the last month to serve as a reference comparison value, the average current value per hour of the current day is compared with the reference comparison value of the last month, early warning information is prompted if the deviation is greater than 10%, and the nth group of conductive clamps is prompted to be abnormal. The average value of each time period can be compared according to actual conditions. The early warning method is one of the methods which are rather accurate and reliable and capable of predicting and judging a conductive clamp fault early warning in advance, and can be widely applied to detection and early warning for different electrical components in the production process of an industrial calcium carbide furnace.