Abstract:

The troika theory about economic growth is a frequently discussed topic, but it needs an integrally economic analytical model to have a correct understanding on it. Applying dynamic input-occupancy-output model, this paper gives a deep analysis to the action modes of investment and other demands in pulling economic growth. The conclusions are:first, they are not completely independent be-tween investment driving force and other demands; second, the potential growth in current year is regulated by last year economy and the current year distribution of consumption and accumulation decides the potential growth of future years; third, the current year demand structure decides the current year actual growth which is not bigger than the potential. The transformation of leading driving force is influ-enced by the economic development stage.

Key words: economic growth engine, input-occupancy-output model, dynamic model