This paper deale with the chemical composition of organic and inorganic components and their combined characteristics in G₁ and G₂ organo-mineral complexes.It was found that iron tended to accumulate in G₂ fraction.The contents of free Fe and Al oxides were higher in G₂ than in G₁ in all soil samples.The loosely combined humus(H₁) was more in G₁ than in G₂,but an opposite trend existed for tightly combined humus (humin).A little differences of the ratios of loosely combined humus to stably combined humus(H₁/H₂) and humic acid to fulvic acid(HA/FA) were observed between G₁ and G₂ fractions in most of the soil samples.Both G₁ and G₂ fractions contained some complex Fe,AI and Ca.It was concluded that the total amount of humus and humin of G₂ was higher than that of G₁,but G₁ and G₂ organomineral complexes could not be regarded as Ca-combined and Fe and Al-combined complexes,respectively.