The invention provides polyether type total-synthesis compressor oil composite which is prepared from the following ingredients in weight percentage: 60%to 85% of polyether, 5% to 30%of alkyl aromatics, 0.5% to 8% of antioxidant, 0.01% to 1% of sulfur-containing or phosphorus-containing extreme-pressure anti-wear agent, 0.01% to 1% of antirust agent, 0.001% to 0.5%of metal passivating agent and 0.001% to 0.1% of demulsifying agent. The invention further provides a preparation method of the polyether type total-synthesis compressor oil composition. The polyether type total-synthesis compressor oil composition has excellent oxidation stability and thermal stability, also has excellent detergency and dispersibility, low carbon deposite and oil sludge formation inclination and excellent hydrolysis stability and demulsibility and is especially suitable for lubricating high-temperature and high-pressure worm air compressors.