This paper explores the role of the coffe's economy in the national economy by using multi-equation model. The model consists of sub models; production, consumption and trade models. The results recommend that the productivity of coffee must be improved to address the increasing rote of this commodity in national economy and the farmer's income. To enhance coffee export, government must try to increase the export quota of this commodity in the international market although the demand elasticity of this commodity is relatively in-elastic.