Environmental protection and long-term application are important concerns throughout the life cycle of cutting fluids.This mainly involves the properties and the service life of cutting fluid,and the health of the operator.The green research and development of cutting fluid was discussed from the choice of raw green materials,including the substitution of toxic and harmful substances,the use of long-life multifunctional materials and high biodegradable materials.The green application of cutting fluid was discussed from intelligent monitoring status,removing impurity,intelligent adjustment and harmless treatment of waste liquid.