The ground transformation facility is a kind of inseparable device with the gauge-changeable bogie, and the gaugechangeable operation process of bogie should be completed in cooperation with the ground transformation facility. The typical ground transformation facilities and their structures in foreign countries were outlined, and the key technological problems in the design of ground transformation facility were discussed in detail. A new ground transformation facility was designed, and its structural characteristics and dimensions were analyzed and explained, as well as the gauge-changeable process of the ground transformation facilities.