In order to decrease the cost of crushing of cement clinker, several saturated alcohols such as ethanol, methanol, iso-propanol and n-propanol were tried respectively as crushing aids. The concentration of the crushing aid was in the range of 0.05 to 0.5 percent by weight. The cement clinker was crushed in a ball mill maintained at 100 ℃ to keep the crushing aid in gaseous phase. In this experiment, gypsum was added to the cement clinker by 2.5 weight percent as in commercial cement production. The results showed that the addition of gypsum increased the crushing rate by 2.4 percent and that the addition of crushing aids decreased the crushing power consumption by 20.8 to 23.3 percent in the order of n-propanol, iso-propanol, ethanol and methanol. However, the tensile strength and the compression strength of the cement product were both decreased by approximately 2 to 3 percent in the reverse order of alcohols decreasing crushing power consumption.