In the past few years, production and marketing activities between Tan Yen vegetable farmers and processing companies have gradually gained local authorities attention. The Bacgiang People's Committee, Department of Agriculture and Rural Development, the Farmers Union, and the Bacgiang Vegetable Processing Company Association conducted hearings in which commune leaders, local government officials, and academics offered their perspectives on how the recent development of the vegetable processing sector have affected the economic efficiency of each factors chained in the system. Vegetable producers are concerned that recent growing incidence of contract non-compliance taking part in the processing companies has caused lower benefit they earn from the sector. Processing companies argue that the unstable customer market and world price fluctuation reflect their costs of doing business. Contract farming in the marketing system, as the new practice, is supposed to have a long-term relationship with continued commitment. However, institutional structure, information on functions and especially linkages between actors, the governance mechanism, and the integral part of local government intervention are necessary to mention but, limited in research. For this reason, this study attempted to describe Tan Yen vegetable marketing system in a systematic, structural, social, and behavioral way. With combined methodologies, the analysis was focused on evaluating the system's linkages among participated actors to place under the context of sustainable livelihood for the small vegetable producers. The conclusion is that the system has relatively weak linkages between actors involved and inefficiency for small producers.