AbstractDue to the test duration restriction, not only the creep strain but also the creep rate should be considered to establish the creep model of the rockfill. The creep rate decides whether the creep model deviates from the actual strain after the test duration. Both the same confining pressure loading and the constant stress ratio loading ways were adopted in this study. In the creep test, the Lianghekou mixture, the Zuoxiagou rockfill and the Xiaolangdi rockfill were used, and their creep characteristics and the creep rate were analyzed. Both the creep strain and the creep rate of the rockfills followed the linear relationship with the time in a double logarithmic coordinate. Therefore a power function model is suitable to describe the creep