Abstract: The impact rolling is a kind of new technology in the area of ground treatment. Compared with the traditional rolling machines, it is more effective, the cost is lower, and it can treat thicker soil, especially it has obvious advantages in soft groud treatment. A new railway is under construction ， most of which are embankment on soft ground soil. The bearing capacity of the shallow natural foundation is less than 150 kPa, and it should be treated. Based on the pilot projects, the process and parameters of ground treatment are studied, and effects of ground treatment are tested. The conclusions may provide technical supports for the application of impact rolling in treatment of the whole line.