Karo District, North Sumatera is a production center of cabbages which provides significant contribution of foreign exchange. Moreover, cabbages in Karo have many advantages compare to cabbages from other countries. Nevertheless, these important roles of cabbages have not been followed by standardized exported treatments, not only the production, harvest, postharvest but also the marketing treatment. Agribusiness of cabbages also show inefficiency of the marketing margin. Based on these problems, it is necessary to analyze the value chain of cabbages in Karo, to see the benefit received by each person in agribusiness system. Further, policy recommendations can be given to improve the efficiency and effectiveness of cabbage supply chain in Karo District. This research was conducted through interviews people who in charge in cabbage agribusiness in 2012. The purposive sample was done considering that the number people in cabbage agribusiness were not too much. The results showed that cabbage exports, in term of value, decreased from year to year, particularly due to limited land. R/C analysis showed the high level of profit. In this cabbage supply chain, farmers receive considerable share, while the exporters with large business capacity also received a higher income. In order to increase production and export of cabbages, it is recommended that government supports several programs such as increase innovation technologies dissemination, improve infrastructures for export as well as develop the simple administration process.