The agrarian sector of the economy is one of the strategic segments of the national economy, the level of development of which depends on food security of the country, a significant part of state budget revenues, the preservation of the village, etc. For the further development of agrarian sector of the economy, the qualitative system transformations are required, which, as the experience of the most world developed countries shows, should be based exclusively on the innovative and investment potential of the development of integration relations.It is carried out the complex scientifically-based monitoring of investment support for the development of integration relations in the agrarian sector of the Ukrainian economy. It has been analyzed the attraction of investment resources by integrated economic entities from international financial, credit and banking institutions, as well as export credit agencies during getting the international guarantees for purposes of project financing. It was established that during 1996-2016 years over 16,7 billion dollars US in prices of 2016 were invested in all sources of financing. The structure of attracted investment resources by main groups of financial institutions shows that the largest share in it falls on funds received from bank lending, issuance of Eurobonds and stock exchange activities.There are determined the features of investment mechanisms and the purpose of project financing; it is shown that in general they play a main role in a large investment process, but are only available for large economic entities and transnational corporations.It is confirmed that the lack of an institutional system of state financial support for export in Ukraine significantly reduces the level of competitiveness of domestic agricultural products on international markets. Therefore, in the context of European integration processes, the current problem is reforming the system of support for the export of final technological redistribution products, with simultaneously restriction of foreign trade in raw materials and semi-finished products, which is carried out, in particular, through its internal economic transfer at transfer prices.