Abstract: Moving mountains to fill out the ditch is a new measure to deal with the shortage of construction land in loess areas. Conducting dynamic strength characteristics research on compacted loess has important theoretical and practical significance for large-scale site formation of moving mountains to fill out the ditches in loess areas of high seismic intensity. This paper uses GDS vibrating triaxial to study the dynamic strength characteristics of Lvliang compacted loess under different conditions of the moisture content, dry density and loading frequency. The results show that the dynamic strength reduces with the increasing of moisture content and increases with the increasing of dry density and loading frequency. The moisture content has significant effect on the dynamic strength of compacted loess. The dynamic strength of compacted loess decreases with the increasing of vibration times. Linear equations under a semi-logarithmic coordinate can be used to fit their relationship.