[Objective] The deformation state of the laess-filled body after filling in the Loess Plateau was studied to provide basis for relevant research.[Methods] Three deep monitoring points in high embankment was laid after loess high fill construction, the layered settlement, soil pressure and volumetric water content of the soil were monitored consecutively about 12 months.[Results] After 12 months of construction, a compression deformation occurred in the junction of the filling and the transfer of the original foundation. Underground of 18 to 27 meters below gully center and the original steep slope occurred obvious tensile deformation. Under the influence of primitive gully terrain, the performance of internal filling body appeared obvious soil arching effect. Under 18 m below ground, the soil pressure difference was obvious, and the influence of the filling body in original gully terrain is not conducive to the weight of the filling body of the central parts.[Conclusion] There is an area sensitive to water after filling in the Loess Plateau, when the underground water level rise, the partial wetting deformation may cause the engineering soil hole and cause the ground collapse.