In order to solve the environmental pollution problem of the traditional phosphates aluminum corrosion inhibitor, an environmentalfriendly cutting fluid was prepared, by using triethylene glycol maleate to replace the phosphates as nonferrous metal corrosion inhibitor, fine refined naphthenic oil as the base oil, and adding extreme pressure lubricant, surfactant,defoamer and biocide as additives. The comprehensive test results show that the prepared cutting fluid is a low foaming, longlife and environmentalfriendly product with excellent storage stability, extreme pressure and antiwear performances.