Abstract: Using polyether base oil, a kind of polyether type synthetic compressor oil was developed by screening and investigating the properties of additives such as antioxidation agent, extreme pressure antiwear agent, co-solvent and anti-rust agent. The viscosity index of the product was more than 210, the rotary oxygen bomb time was more than 1000 minutes, the copper strip corrosion（100 ℃，3 h） was grade 1b, and the scar diameter after the four ball milling test was about 0.5mm. The developed product has an excellent performance in viscosity-temperature，oxidation stability，rust resistance and anti-corrosion and good extreme pressure anti-wear. The quality of the product reached the level of foreign similar oils. After practical use for one year，the wear metal content was less than 30 μg/g, showing that the developed product can meet the lubrication requirements of hydrocarbon gas compressors.

Key words: polyether, compressor lubricant, hydrocarbon gas