The formation of organic-mineral complex in soil can protect organic matter and make it difficult to be decomposed. This study aimed to investigate the dynamic effects of long-term application of different livestock manures on the organic-mineral complex status of phaeozem and the distribution of organic carbon. The phaeozem under a long-term locality experiment started in 2010 at the teaching experimental field of Jilin Agricultural University was used as the research object. Four treatments were set up in the experiment, namely, application of chicken manure, cow manure, pig manure and the control. Soil samples were selected in 2010, 2012, 2015, 2018 and 2020 to determine the content of heavy fraction organic carbon, the degree of organic-mineral complexation, the content of different components of organic-mineral complex. And the distribution of organic carbon in the organic-mineral complex were also determined. The results showed that:At the beginning of the experiment, the effect of exogenous organic matter on soil complex condition was not significant, but with the extension of time and the long-term application of livestock manure, moreorganic-mineral complexes were formed, and the accumulation of organic matter was significantly enhanced, with the best effect observed in chicken manure treatment. The amount of heavy fraction organic carbon and quantity of organic-mineral complexation under treatment with chicken manure increased by 12.0% and 10.0%, respectively, compared with the control in 2020. After the application of livestock manure, the content of each component gum dispersion complex was also higher than that of the control, however, the content of G₁ complex showed a decreasing trend. Long-term application of organic materials increased the distribution of organic carbon in each organic mineral complex. The application of livestock manure could improve the soil complex condition and increase the complex and its carbon content, of which chicken manure was the most effective.