Today, the National Development Fund due to the important role that play in dealing with oil revenue shocks, they are considered by the oil countries as an effective mechanism for managing oil revenues. Therefore, a new Keynesians DSGE model with respect to price stickiness and major sectors as households, firms, governments, central banks and oil, the National Development Fund, Designed and calibrated for Iran's economy. The study of the first and second order moments of simulated variables confirms the relative success of the model in simulating the space of the Iranian economy. However, due to the combination of the state budget, the increase in the current and operational budget is far more than the development budget. The inefficiency of government investment has also made the government's budget more ineffective in the model. Also, the manufacturing sector of the non-oil sector of the Iranian economy has been rising (relatively small) because of National Development Fund share of Concessional facilities provided to the private sector. Other results indicate that increasing the share of the National Development Fund from oil revenues will increase private sector investment and consequently the production of non-oil sector in the country. The necessary condition for realizing the results of this policy is the increase in the capacity of non-oil revenues of the government.