This paper deals with the distribution of organic phosphorus compamds in organo-mineral complexes of periodically waterlogged paddy soils developed on red earth and paddy soils developed on facusrrioe deposits with various fertility in Zhejiang province.The results are summarized as follows:1.The organic phosphorus content in organo-mineral complexes were G₂>G₁>G₀.The C/Pe_org and N/P_org ratios of G₂ were higher than those of G_o and G₁,which reveals that the organic phosphorus accumulated in G₂ of organo-mineral complex is less than organic carbon and nitrogen.2.The total amount of organic phosphorus compounds extracted from organ-mineral complexes was higher than that in soil sample.For different compounds,inositol-P nucleic acid-P and phospholipid-P were 12.1-32.3%,1.9-5.8% and 0.7-3.1% of total organic phosphorus respectively.The contents of inositol-P,nucleic acid-P and phospholipid-P in G,were higher than those in G₁ and G_o.3.The labile organic phosphorus in organo-mineral complexes constitutes 5.0-15.9%,the moderately labiele 36.6-68.6%,the moderately resistant 13.0-26.0% and the highly resistant 10.0-29.3%.Although the percentage of labile pool in Go fraction was higher than soil sample,it dropped in G₁ and G₂.The results show that the distribution of labile and moderately labile pool in organo-mineral complexes of different soils is related to the contents of nucleic acid-P and inositol-P.