Soil samples were collected of eroded Ultisols,varying in extent of erosion(slight,medium and severe),in the subtropical China.Organo-mineral complexing status of the samples was determined with the method modified by Fu Jiping and its relationship with soil nutrients was analyzed.Results show that with the extent of erosion rising from slight,medium to severe, the content of soil nutrients(OM,total N and total P)decreased gradually.Tightly-combined and loosly-combined humus dominated in the soils,and the content of stably-combined was the least.With erosion of the soil getting serious,both the contents of combined humus and organo-mineral complexes reduced,but the organo-mineral complexing degree of the soil did not change much.The content of soil complexes was positively related to combined humus and water-stable aggregates,so was the organo-mineral complexing degree.The contents of total N,total P and OM were closely related to combined humus,but the contents of total K and CEC were not.Among the three types of humus,tightly-combined humus was the most closely related to soil nutrients (total N,total P and organic matter).