Abstract: Forest resources are one of the best important type of the land cover. It related to standing and ecological effect from forest resources in the social, economics, culture and environment. It is very important to optimize the distribution of forest resource for water and soil conservation on the regional scale based on remote sensing images and mathematical methods. In this study, two periods （2000 and 2006） of TM remote sensing images with similar temporal phase were selected as the basic data sources. The supervised classification was used for classification, statistics, verification and analysis of the forest resources with the AHP and the optional distribution method. The results indicated that the forest resources spatial distribution was extremely uneven in Dingyuan, Fengyang,Laian,and Tianchang,their needs should be increased by 476.74km^2,255.41km^2,162.76km^2,263.49km^2. Therefore, the appropriate increase of farmland shelterbelt construction is conducive to the harmonious development of agriculture and forestry ecological county.