The topic of economical development in USSR in 1920-s is touched upon in the article. Nowadays this questions is quite debatable. The discussional subject is gradual becoming of USSR like industrially developed state. It was achieved thanks to policy of mixed economy and new economical policy without forced industrialization. However the author proves the new economical policy deviation and further conversion to acelerated pace of industrialization was consequential stage and it was necessary measure. The author makes such conclusion due to analysis of economical development in foreign industrial countries and generalized experience of science research. Based on this, the author makes following conclusions. In 1920-s USSR passed several stages of economical development. The authority had to cancel the policy of "military communism" because of its fail. Then capitalist relations were returned partially. It was the only true decision. But Bolsheviks inherited from Russian empire backward agrarian country. That's why the vast disruption appeared between agrarian and industrial sectors in the economy. These processes led to the huge disbalance in soviet economy. As the result new economical policy had sequences of criseses for the short time. It's downfall was inevitable. USSR had to returned the economy to industrialization. Also the perspective of new world war as one of the foreign policy factors pushed to the path of industrialization.
