This paper investigates the contribution of Taiwan's agriculture and related production activities to the gross domestic product (GDP) using input-output analyses. Taiwan's agricultural production only accounted for 2.2% of total GDP in 2001. However, if we apply the Domestic Impact Coefficient Matrix to calculate the Leontief backward linkage effect, then the share of value added induced by consuming food and agricultural products is about 13%. Therefore, agriculture remains important in Taiwan's domestic economies because of its interrelationships with other industries.