The invention relates to a cooling-lubricating method for grinding, which consists of projecting the cutting fluid (2) and a supplementary fluid (4) at a very low temperature against the grinding wheel (1), such that both fluids (2 and 4) penetrate into the grinding wheel (1), the supplementary fluid (4) acting on the cutting fluid (2), modifying the properties of the latter, which cutting fluid, upon reaching the area of contact between the grinding wheel (1) and the workpiece (6) being ground, again recovers the original properties due to the temperature increase occurring in said area.