The invention discloses a control method for an oil purifier integrated with automatic detection and purification, and an intelligent controller thereof. The intelligent controller is composed of a power module, a memory module, an interface, an integrated LCD controller, and an ARM processor. A data acquisition part includes acquisition of detecting data of an oil quality online detection unit, heating tank liquid level data, heating tank temperature data, vacuum tank pressure data, vacuum tank liquid level data, infrared switch state data, oil-water interface meter state data, pressure sensor 1 data, pressure sensor 2 data, and the like. A control part includes controlling a start-stop of the oil quality online detection unit, an on-off of an oil inlet valve, an on-off of the outlet valve, a start-stop of an oil inlet pump, a start-stop of an oil outlet pump, adjustment of a vacuum pump, an on-off of an alarm, and the like. According to the invention, the intelligent and unattended operation of the oil purifier integrated with the automatic detection and purification is realized with the high energy efficiency; the oil can be changed from conventional replacement based on time to replacement based on the oil quality; and the positive significance is realized for reducing the oil-using equipment failures and prolonging the service life of the equipment.