Abstract: In order to study the subsidence deformation law after filled loess ravine, the typical loess ravine with the maximum filling thickness of 38 m was selected as high filled site, the three dimensional monitoring scheme was designed for subsidence, data of post-construction surface subsidence and original foundation subsidence were collected, the development law of surface subsidence and original foundation at different slope patterns of original roadbed during 12 months after construction was analyzed, the following conclusion was obtained:the composition of post-construction subsidence of high filled loess ravine was different at different position, the post-construction subsidence of the filled body induced by its own weight was directly related to the thickness of the filled body, the post-construction subsidence was relatively big at place with steep slope. The development curve of post-construction subsidence of the filled body was obtained through fitting, providing reference for the research on the deformation law of hill fill site in loess area.