Study the Effect of Trade Policies on Export and Import in Iran

In this study we want to analyze effects of change in exchange rates on the export, import, product prices and others macroeconomic variables. The method which has been used in this study is based on co integration method and vector autoregressive method. In this study first the long-term relationships between variables are determined and then the short-term relationship between variables will be determined according to Impulse response functions.The results show that changes in exchange rates affect on macro economic variables, while there were no effects from exchange rate on macro economical variables.