Continuous temperature measurement self-checking system and use method

The invention relates to a continuous temperature measurement self-checking system which comprises a gas flow meter, a placing barrel for placing a temperature measurement probe and a self-cleaning device arranged in the placing barrel, the gas flow meter is arranged in a cooling pipeline leading to the temperature measurement probe, the gas flow meter is electrically connected with a controller, and the self-cleaning device is arranged at the bottom of the placing barrel; the self-cleaning device comprises a proximity switch, a driving motor and a sweeping part, a baffle is arranged above the bottom of the placing barrel, a through hole is formed in the middle of the baffle, the proximity switch is arranged on the inner wall of the through hole, a sweeping part is arranged below the through hole, the driving motor is arranged below the sweeping part, and an output shaft of the driving motor is connected with the sweeping part; and the driving motor and the limiting switch are electrically connected with the