Agricultural promotion areas are designated based on the efficiency of the investment on agricultural production infrastructure, and thus large and collectivized farmland is mainly included in agricultural promotion areas. However, Fields outside agricultural promotion areas would be necessary to be conserved and managed more actively when they are productive and environmentally valuable. This study evaluated fields outside agricultural promotion areas based on their productivity and environmental value. To be specific, slope and the land suitability index for paddy, upland, and orchard were used as proxy variables representing fields’productivity. The national environmental zoning map of Korea Environment Institute was incorporated for the environmental index. In addition, to aggregate the indices and evaluate each field, three methodologies were used: 1) intersection method 2) human development index of UNDP 3) Data Envelopment Analysis. The results show that, with respect to environmental conditions, the difference between fields in agricultural promotion areas and fields outside agricultural promotion areas would be insignificant. Also, when intersecting all indices together, 15.8% of fields outside agricultural promotion areaswould satisfy criteria for the productivity and environmental conditions. The results thus imply that the productive and environmentally valuable fields should be considered as agricultural conservation areas, and managed them more carefully.