黄土的侵蚀机理是开展黄土高原水土侵蚀综合治理的关键，通过兰州以西黄（河）湟（水）谷地黄土区１∶５万区域地质野外调查，认为黄土的潜蚀是黄土高原水土流失的一个重要因素。在黄土侵蚀的过程中，潜蚀作用起着重要的作用。在宏观上，它可以形成各种黄土潜蚀地貌，同时它还能引发或者加剧其他侵蚀作用。黄土的岩性是黄土具有潜蚀能力的内在因素，而气候、地下水、构造、植被以及人为因素是其外在因素。在黄土区１∶５万区域调查过程中应加强这一方面的调查、研究工作 The erosion mechanism of loess is the key to the comprehensive management of erosion and erosion in the Loess Plateau. According to the field geological survey of 1: 50000 in Loess Plateau of the Yellow River in the west of Lanzhou, it is considered that the loess erosion is one of the soil and water loss in the Loess Plateau Key factor. In loess erosion process, the role of latent erosion plays an important role. Macroscopically, it can form a variety of loess subsidence landscapes, while it can trigger or exacerbate other erosion effects. The loess’s lithology is the intrinsic factor of loess erosion potential, and climate, groundwater, structure, vegetation and human factors are its external factors. In the area of ​​1: 50000 in loess area, the investigation and research in this area should be strengthened