The role of agricultural cooleratives for tice maekrting has been changed since 1994. It is supposed to be based on the rice policy reform. Moreover, rice policy has newly been reformed in this times. This paper looks for the development of rice marketing business of agricultural cooperatives under the market-oriented dereguration of rice policy. This paper is based on case study conducted on the present situation of agricultural cooperative's rice marketing in Fukuoka Prefecture under the rice policy reform. The agricultural cooperative's, namely, JA Chikuzen Asakura, JA Itoshima and JA FUkuokashi were visited for fact finding on the spot. The result of this study has provided us some meaningful conclusions. The tendency of agricultural cooperatives try to colect rice from farmers as much as possible, and then strive to sell out at price as higher as possible. But if marketing compention among agricultural cooperatives exists, rice price would decline and rice production and move to other non-rice crops. It seem that rice production system and rice marketing business of agricultural cooperatives will dramatically be made over.