Loessal soils are one of maln soil types in the northern part of China. They are widely distributed over Shanxi, shaanxi, Nei Monggol, Gansu, Ningxia, Qinghai and Henan provinces, with a calcareous reaction and pH of 7.5-8.5 and low content of organic matter. The yeild of crops in the soil regions is low because of drought and erosion.In comparison with the average contents of soils in the whole China, the contents of the total Zn and Mn of the soils in the loessal region are lower, Mo is very low, B is medium and Cu is slightly higher. The contents and distribution of trace elements in the soils have some regularities, which are affected by parent material, climate, topography and soil properties. The contents of Zn, Mn, Cu and Fe in soils increase with the increasing of soil clay particles from the nouthwest to the southeast. The content of B in the soils derived from river alluvium is higher than that in the soils derived from loess. And the content of Mo in the soils derived from loessal materials is the highest.