Aluminum electrolysis production process breakage slot is a major hidden danger of electrolysis safety production. Once damaged, the electrolysis cell will be stopped for maintenance, and the whole series will be affected. At the same time, the traditional infrared gun temperature detection has some shortcomings, such as not timely temperature measurement, large temperature measurement deviation, measurement of the unchanged and security risks. But online electrolysis cell monitoring system can be timely, accurate, real-time monitoring of the electrolysis cell cathode steel rods, steel windows and the furnace bottom temperature situation. At the same time, it is equipped with functions such as intelligent warning for temperature abnormality, which avoids the risk of leakage of the cell.