The invention relates to a high fine centrifugal oil purifying device comprising an uptake hose, a gear pump, a centrifuge, a sewage accepting tank, a motor and an oil outlet pipe, wherein, the uptake hose is connected with the input interface of the centrifuge to form an oil inlet pipeline; the output interface of the centrifuge is connected with the oil outlet pipe to form an oil outlet pipeline. The oil purifying device is provided with a PLC, a venting valve, a pressure sensor, a temperature sensor and an adjustable check valve. The PLC controls the gear pump, the check valve and the motor according to the pressure signals detected by the pressure sensor and the temperature signals detected by the temperature sensor. The invention realizes full-automatic control of the oil purifying process, ensures high oil purifying quality, is simple in operation, saves time and labor, can protect the oil pump, the motor and the centrifuge and prolongs the service life of the oil purifying device.