The purpose of this comparison study is to the status variation in the amount, prices, gross income, production cost and surplus of fruit products while it products of fruit farmers after passing ISO9001 certification. The data collection method is to questionnaire design in advance, and then followed by dispatching officers to do on-site interviews to acquire the production and sales data. The fruit farmers who have passed ISO9001 certification in Taichung area are the study objects. The collected data were analyzed by the paired samples T-test analysis in order to know whether the operating results achieved significant differences after the fruit farmers participated in the certification. The results indicated that after fruit farmers participated in the certification, the prices, gross income and surplus were trended to the significant improved, but the production cost and amount are also increased.