Experimentation for coefficient of thermal conductivity and specific volume heat of loess is explored first; and the experimental installation is installed. Then taking loess samples with different densities and moisture contents

the coefficient of thermal conductivity and specific volume heat of loess are tested. The test data show that for loess with constant water content

if the density is increased

the coefficient of thermal conductivity and specific volume heat both are increased. And for loess with constant density

if the water content is increased

the coefficient of thermal conductivity and specific volume heat both are increased too. Based on research on the test data

two formulas are obtained to determine the coefficient of thermal conductivity and specific volume heat of loess. After that it is pointed out that compared with soil density changes

water content change can result in more variations of coefficient of thermal conductivity and specific volume heat of loess.