This study analyzes the factors that effectively affect the expansion of cooperative shipping of watermelon in Chungbuk province. One hundred fourteen farmers were surveyed with the items of farmers' satisfaction, recognition of necessity for cooperative shipping, importance of expansion method, factors of hindrance for cooperative shipping, and willingness to join the cooperative shipping. Ordered logit model was adopted for the econometric analysis. Paired sample t-test and independent sample t-test were also adopted to test statistical significance of the results. The results show that farmers' satisfaction for cooperative shipping is influenced by the benefits of income obtained from cooperative shipping and the use of facilities available. Watermelon farms have a demand for establishing an efficient marketing system for the expansion of cooperative shipping. To meet this demand they need to give more reliability to regional agricultural cooperatives through the supply of contractual quantity. In addition, regional agricultural cooperatives needs to handle the entire amount of contractual quantity through cooperative shipping in the long term perspective.