The invention discloses a novel coalescence-separation oil filtering machine. A first-stage filtering device comprises an oil inlet, a first outlet, a coalescing separator and a water collecting pool; the lower part of the coalescing separator is provided with the water collecting pool; the second-stage filtering device comprises a shell, a second inlet, an oil suctioning pump, a second outlet and a rotary barrel; the oil suctioning pump is provided with the second inlet and is connected with the top part of the rotary barrel; the rotary barrel is provided with through holes and a plurality of layers of filtering films; a third-stage filtering device comprises a third inlet, an oil outlet, a preheating tank, a vacuum chamber and a condensing tank; the oil outlet is formed under the vacuum chamber and the condenser is connected on the vacuum chamber. The novel coalescence-separation oil filtering machine disclosed by the invention has the advantages that by utilization of common action of coalescence-separation filtering, centrifugal separation filtering and vacuum filtering, an oil product can be effectively purified, the purity of the oil product is improved, and the purified oil product can be used secondarily; the structure is simple, the efficiency is high, the production cost is reduced and the service life of oil-product using equipment is prolonged.