In order to investigate the dynamic characteristics of frozen saline silty clay (studied saline soil) under reciprocating loading, a series of cyclic tri -axial experiments have been conducted for studied saline soil with 0.0, 0.5, 1.5, and 2.5 % of Na 2 SO 4 contents under confining pressures 0 MPa -18 MPa at -6 degrees C, respectively. The test results show that as the increase of number of cycle N , the accumulated axial strain e aN continuously increases, and the relationship between e aN and N can be described by an exponential function: e aN = aN b ; As the number of cycle N increasing, dynamic shear modulus G dN and dynamic bulk modulus K dN increase firstly and then decrease slightly; Salt content and confining pressure have great influences on the e aN , G dN and K dN . Within the same loading cycle, G dN and K dN decrease until reaching their minimums when the salt content is 0.5 %, and then G dN and K dN increase as the increase of salt content. With the change of salt content, e aN presents an opposite change law to G dN and K dN . For the studied saline soil with same salt content, during the same loading cycle, e aN and G dN increase until reaching their minimums, and then decrease as the increase of confining pressure, K dN increases with the increase of confining pressure. This study can be applied to evaluate the elasto-plastic properties of frozen soils and saline soils subjected to cyclic dynamic loading.