The developing countries, including Jordan, face challenges and difficulties in adjusting their fiscal policy because there is an increasing demand for public expenditures that determine and justify public revenues. There is a relationship between the fluctuations in oil prices and the volume of public expenditure, which is proven by the standard study, and thus the following problem can be formulated: How much oil price volatility affects the public expenditure policy in Jordan. A Least squares method, Granger-causality tests was used. We find that that oil prices have significant impact on government spending This indicates the importance of variable X in the interpretation of Y and its significance. The study also fined that the oil price rates have a direct impact on government spending in Jordan, and the increase in oil prices by 1% leads to an increase in the general policies of spending in Jordan by 52.20%.