The utility model provides an automatic measuring machine for the electrolysis technological parameter of the aluminum electrolytic tank comprising a measuring machine connected with a main controlling machine set. The measuring machine comprises a data collecting measuring device, a power device and a pulse distance measuring device. The data collecting measuring device comprises a probe and an electric thermocouple. The pulse distance measuring device comprises an infrared photoelectric sensor and a rotating wheel with N holes positioned in the correlation slot of the sensor. The power device comprises a direct current electric motor connecting with a decelerator of which outputting end is fixedly provided with the rotating wheel and the other end is connected with the driving system of the belt of teeth shape. The belt of teeth shape is fixedly connected with the back end of a pushing rod by a force transmitting plate and a connecting plate of teeth shape. The front end of the pushing rod is connected with the probe which is not only a measuring electrode but also a temperature sensing tube of the electric thermocouple. The positive and the negative electrodes of the electric thermocouple is in insulation with the probe and the cold end of the electric thermocouple is respectively in electric connection with a spring wire by a compensating conducting wire to form the inputting end of the temperature measuring circuit. The measuring electrode is in electrical connection with a spring thread by the conductive pushing rod. The main controlling machine is provided with an electrolyte liquid level, an aluminum liquid level testing circuit, a distance-position, time-delay and temperature-sensing circuit and a corresponding display screen.