Abstract：The soft rock material-cement mortars are used during the moisture and heat transfer experiment. The two different kinds of soft rock materials are experimented in the open system with temperature gradient，and the results show：(1) the degree of the moisture and heat transfer is different between the different soft rock materials，the content of quartz mineral in the sample is higher，the redistributing time of the temperature field is longer；(2) the gradient of temperature is the main driving power of the moisture transfer，the gradient is higher and the moisture field redistributes quicker；and (3) the porosity ratio is higher and the process of freezing is longer.
