Korean agriculture is not easy to raise agricultural income due to its small size. In particular, it is difficult to have market bargaining power in agricultural product sales on a small scale. As part of overcoming these limitations, the National Agricultural Cooperative Federation began to foster Farmers in Co-selection and Shipping Organizations(FICSO) in 2008. The FICSO refers to a farm organization that practices joint shipment, joint selection, and joint calculation under a shipment contract between the National Agricultural Cooperative Federation and farmers. Although it is expected that the FICSO will increase the price of farm households by increasing the bargaining power of transactions, empirical studies on this are limited. Accordingly, this study analyzed the effect of joining FICSO on agricultural product sales using the propensity score matching method using farmers who joined FICSO as a processing group and farmers who did not join the FICSO as a control group. To this end, various variables such as the population and sociological characteristics of managers, farm management, cultivation crops, and sales place were considered as explanatory variables for the amount of agricultural product sales as performance variables. The 2020 Agricultural Survey data surveyed by the National Statistical Office were used, and the amount of agricultural product sales was estimated in consideration of cultivated crops and cultivation area to become a continuous variable. In the estimation of the average treatment effect(ATT) for the treatment group, it was analyzed that the amount of agricultural product sales was higher than that of farmers who joined the public shipping group did not join the public shipping group. According to the propensity score matching method, it was estimated to sell an additional 9.14 million won to 10.6 million won per farm. Therefore, as FICSO has a positive effect on increasing agricultural product sales, it is necessary to strengthen the development of the public shipping association. This study has limitations in that it was not possible to estimate the effect of reducing production and sales costs of public shipping circuits due to data constraints, and the dynamic effect of public shipping on agricultural sales over time. Nevertheless, this study is meaningful in that it quantitatively analyzed the effect of public shipping on farm sales of agricultural products.