Abstract: The successful of agribusiness is not only determined by economic and natural resources aspect but also influenced by existence of social capital aspect. This reality can be investigated in farming and marketing of sweet corn at Rasau Jaya sub district, an area at urban fringe of Pontianak City, West Kalimantan Province, Indonesia. This study is aimed to analyze determinant factor the successful of sweet corn farming and types of social capital among actors in its marketing. Data were collected by structured and depth interview, observation and focus group discussion. The results of this study show that some determinant factors for successful are: the favorable climate that give benefit, rural and urban linkages, interrelated between crops and livestock farming and good partnership among marketing institutions through using social capital. The type of social capital in this partnership is characterized by existence of mutual solidarity and trust which is intended to nurturing of business networks.