This study has presented a study of structural and technical change in the growing process of Korean agribusiness sector using decomposing changes(input-output model) in the period of 1985-1995. Compared with the other sectors, total output and growth rate of agribusiness sector is low. In the agribusiness sector, the growth rate of total agricultural production is decreasing but the food processing sector and knowledge and information sector is increasing. The source of· structural change in the agribusiness sector was more dependent on changes in final demand. But the cause of decrease in the agricultural production sector was technical change due to changes in input-output coefficients. In order to develop agribusiness sector, the linkage effects of these sectors have to maximize.