The oil mist is sucked into the electrostatic oil mist purifier by the fan, and some of the larger oil mist droplets and oil particles are captured on the flow sharing plate due to mechanical collision and retention. When the airflow enters the high voltage electrostatic field, under the action of the high voltage electric field, the oil mist gas is ionized, the oil mist is charged, and most of the oil mist can be degraded and carbonized.