The strategy principles and main directions of regional investment activity financement mechanism improvement are formulated and worked out in the article. The contemporary conditions are analyzed, the factors are researched, the priority directions are defined, the suggestions on the better use of investment sources are worked out, and on this base the suggestions on the investment process activization in the territorial systems are worked out.

In this article was determine role and place for investment activity in secure steady development of big territorial systems. There are formulate basis principles for forming investment strategy of economical development regions. In article work out principal directions for reflecting regional mechanism of management territorial investment activity. There is prepare the sentences and recommendations for secure considerable growth of investment activity in territorial and production systems of different level.