Abstract: Based on analysis and research of the development of soil geology and geo-heritage, the concept of soil geoheritage is brought forward and defined at the first time. The distribution of soil geo-heritages in China is consistent with the rules of soil distribution, which shows horizontal zonation and vertical zonation. Regarding the selection of soil geoheritages, many factors could be considered, such as scientific research, popular science, economic construction, social development and so on. Choosing natural geologic attribute and scientific value as the main evaluation factors, the assessment system of soil geo-heritage is built. By this system, the paleosoil geo-heritage in Luochuan County of Shaanxi Province is assessed as first class. The result indicates that this assessment system is practicable and operable.