In order to study the applicability of different long-term strength prediction equations for different soils， the long-term strength of saturated frozen sandy soil， silt and clay were tested using a spherical template indenter. At the same time， the long-term strength prediction equations of three kinds of soils were used to predict their long-term strength. The applicability of the three long-term strength prediction equations for different soils was studied by comparing the measured values with the predicted values. The long-term strength prediction equation of Vyalov can accurately predict the long-term strength of silt and clay. For the sand， the prediction values of the three long-term strength prediction equations have some deviation， which recommends that the weighted average of the three predictive equations can be taken as the predictions.