The objectivie of current study is to evaluate agribusiness performance of soybean included the on farm an marketing subsystems, besides, the development of soybean as one of superior agricultural commodities and its contribution of soybean upon the gross domestic product (GDP) of Sumedang. The results indicated that agribusiness performance of soybean consisted of farm iputs procurement, on farm production, harvesting and processing, marketing and supported infrastructure and its supporting subsystems. Soybean as one of superior commodities has been well developed due to the availability of human and natural resources, exsiting markets, production technology and business partnership program. The contribution of soybean upon regional GDP during the years of 2008 – 2016, bay the 2008 constant price, was between 0,071% and 0,357% and its contribution upon regional agricultural sector was price was between 0,248%– 1,144%. Where as soybean contribution based on the curret price was between 0,068% and 0,621% and between 0,239%-1,959% respectively. During those periods the contribution of soybean upon the GDP as well as on agricultural sector was fluctuated and tend to be declining.