The aim of this paper is to investigate the effects of fiscal policy shocks on the actual, cyclical and structural budget balance in OPEC countries during the period 1980-2015. For this purpose, by separating the budget balance into two cyclical and structural variables, using the Panel Structural Vector Auto Regression approach, which it presented in Pedroni (2013), as well as separation structural shocks into two common and idiosyncratic shocks among OPEC countries, the effect of fiscal policy is examine. Regarding the results, the effect of expenditures fiscal policy on the actual and structural budget has been positive and the effect of tax policy has been negative in theory. Based on the results, the need to pay attention to automatic stabilization and the use of monetary policy to deal with economic problems, rather than applying discretionary fiscal policy, are advisable.