In this paper, on basis of vector autoregressive model (VAR), three variables of subsidies for wheat, wheat prices and wheat insurance was modeling for agricultural section in Iran in1993-2008. The results of the model show that even if a shock as big as one standard deviation incur in wheat price, subsidies for wheat receive big variation, that this variety come with positive sign and wheat insurance will have low varieties. Although if shock incur in wheat subsidies, wheat insurance and wheat price will have small varieties, also of other results in this paper can point that , how much differentiation in variations is due to variable itself and how much is due to other variables. Variations in wheat insurance are due to of its variable, while variations in wheat price are due to wheat insurance and wheat price. And variations in subsidies are due to of three variables

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