This study aimed to estimate via VAR the reaction of the export demand for Guinea-Bissau Cashew nuts to the shocks of world income, exchange rate and of the foreign and domestic prices and of the effects of the Civil War, which occurred in the country from 1990 to 2011. The main results obtained by analyzing the impulse response function and variance decomposition, showed that changes in domestic price and exchange rates don’t explain the external demand for this commodity. External demand responds to changes in global income and foreign price. Moreover, the Civil War of 1998 influenced the foreign demand. In the long run, external demand for cashew nuts doesn’t react to shocks in any of the variables in the model.