The aim of this work is the concrete historical progress of the state farm system formation in Eastern Siberia at the end of 1920s - first half of the 1930s, the identification of the causes contributing to the state of its reorganization (disaggregation). The basis of this writing are archive documents of the State archive of contemporary history of Irkutsk region and the State archive of Irkutsk region. The creation of state farms in Eastern Siberia was planned in 1927, but in fact their organization refers to 1929. By 1931, there were 22 socialist economies on the territory of the East Siberian region, not counting 51 cooperative enterprises of agricultural enterprises affiliated with Kraypotrebsoyuz. One of the problems of land management was the lack of available cultivated land, which was solved by removing it from the collective and individual farms, colonization resettlement Fund. There were some cases when individual farmers were not provided with the other plots of land instead of withdrawn ones before the starting of the sowing campaign. It undermined their economic life and material basis. Complexity was in the process of collecting cattle in livestock farms. The supply of animals was carried out in the unfinished stockyards. On January 1, 1932, the provision of livestock buildings on farms systems "Cattleman" was 50.8%, "sheep breeder" - 63%, "the Pig man" was 30.3%. Other disadvantages included a lack of financial support for state farms and workers. The lack of coordinated action from the governing bodies, the discrepancy of personnel potential of East Siberian region declared parameters of organized state farms (both qualitative and quantitative parameters). One of the ways to address the staffing issue in the East Siberian region was the migration of workers from other areas of the country. The process of unbundling, which began in 1932 was accompanied by a reduction and redistribution of the land Fund (also through the organization of new state farms), property (e.g., farm equipment), strengthening the social security of workers of state farms etc. Thus a legal and administrative system was developed which allowed to shift the responsibility on the "state vertical". On the basis of the conducted analysis the following conclusions were made. The low quality of the economicorganizational measures at the stage of formation of state farms led to the delay in the launch date of their activities. The failure of the production indicators, high loss of cattle, and the shortage and turnover, contributed to lower labor productivity compared with farms. An important result for the state was the number of state farms in the process of collectivization, which allowed the districts where the organization was located to pass the threshold of 50%. Restructuring (disaggregation) of the state farms, which began in 1932, was aimed at the revision and correction of mistakes made in large-scale construction of state farms at the end of 1920s - early 1930s.
