In environmentally-friendly rice farming, the production efficiency is very important because it is directly connected with farmers income and environmental agriculture development. The objectives of this study are to estimate the Efficiency Index to express the efficiency of environmentally-friendly rice production by using DEA, and to suggest the policies to boost the production efficiency. As the results of this estimation, there are large differences in the Efficiency Indexes among farmers under the same environmentally- friendly farming system. It is also found Efficiency Indexes of environmentally-friendly rice production smaller than its of traditional rice production. So it is necessary for development of environmentally-friendly rice production to systematize a production technology system, and the extension system of environmentally-friendly rice production.