The utility model belongs to insulating oily filtration field specifically discloses a novel vacuum oil filtering equipment, including main fuel tank, prefilter, coalescence filter, fine filter, adsorption filter, vacuum separator and vacuum system, be linked together through the pipeline between each equipment, this equipment can satisfy the oily oil strain needs of natural ester insulation thatconcise technology was produced, also can satisfy needs such as the insulating oil filtration of the natural ester that receives the pollution, purification, promotion performance, and entire system area is little, safe and reliable, and the running cost is low, easily industrialization popularization.