After long period of interaction, the form of organic and inorganic minerals would change. Batch technique was used to make a comparative study of the sorption for trichloroethylene (TCE). The results showed that the organic and inorganic minerals were existent in the form of organo_mineral complexes. The K_d and K_oc of organic-mineral complexes changed more obviously than organic matters and inorganic minerals. The interaction between humic acid and simulated minerals affected the sorption of trichloroethylene. Based on an analysis of the conformation of the humic acid in the complexes, the authors formulated a model of organo-mineral to explain the results.