Sustainable and stable trade under a contract is crucil to farms as it provides stable financial sources, makes it possible to make farm planning in advance and raise products' competitiveness. Especially because contract farming leads to predictable production and consumption, more contract-based farming is vital to develop agricultural commodities distribution system. It is because contract-based farming or lump sum transactions shorten product distribution process as, at the starting point of the distribution system, it has all the functions as product distribution and sales to consumer market and it also works as a retail market for producers. It is necessary to analyze determinant factors in selection of product retailers for contract farming expansion. On the other hand, it is highly likely that the farm would consider not only contract farming with NongHyup but also lump sum transactions, the research analyzed quantitatively factors on farmer's intention and their selection of fresh produce retailers using surveys and bivariate probit model, and sought ways to increase farming based on contract with NongHyup.