Abstract: A series of uniaxial compressive strength tests were conducted on frozen saline silty clay.The test results show that: within the test range condition,the compressive strength decreases linearly with increasing salt content and descending test negative temperature.For a certain strain rate,the yielding strength is closely related to the compressive strength with the variation of temperature and salinity.The concept of relative temperature is proposed,and a linear relationship between the relative temperature and the compressive strength at different test temperature and salinity is presented.The relative temperature can be used to link the mechanical properties of non-saline soil with those of saline soil.