Abstract: The paper considers the present situation with in Dry-Hot Valleys of yuanmou River which is high temperature and dry climate, extremely fragile ecological environment, depressed rural economy, unitization rural industry structure and unreasonable plantting system, takes small watershed as basic unit, makes xiaoxincun the demonstration village, and carries out the Eco-village build with the participatory of “scientific research institution + regional department + farmers”, and applicates synthesis management of small valley technique and test model.Practice shows that：Ecovillage construction in the village of xiaoxincun rises farmers,humanities consciousness of ecological environment build and protection, increases science and technology level, improves environment of watershed ecology and human being, increases the rural economy and realizes a harmonious and sustainable development both for humans and nature.