According to 31 selected eco -economic indexes , taking administrative county (district)as the unit ,the paper divides the Three Gorges reservoir area into 4 agroecological -economic regions by the fuzzy cluster analysis method of ISOTATA , that is, Ⅰthe vegetable -tourism-flower-animal husbandry-processing eco-economic region in the hilly area of outskirts of the main city proper ,Ⅱthe grain-economic crop-fruit- animal husbandry- processing eco-economic region in the hilly and low mountainous areas between...