Abstract: It is very weak of the eco-environment of the Water-Level-Fluctuating zone in the Three Gorges. By interacting of water and soil, weathering soil-forming of the mother rock will be accelerated, soil erosion will be aggravated, nutrient substance, such as N and P, and heavy metal will be released from soil to water greatly. In the preliminary stage of serving of the Three Gorges reservoir that make the eco-environment weaker, water and soil loss more serious, geological hazard increasing, and lead to water pollution occur, especially in the bay of reservoir where water flow slowly, the concentration of nutrient increasing, such as N and P, will stimulate alga growing rapidly, and that will give rise to the eutrophication of water. However, with healthy wet land ecosystem formed, the effect of coupling of water and soil is benefit for environment. So in order to prevent environment of Water-level-Fluctuating zone in the Three Gorges from degradation, The macro-control function of government should be reinforced, land protection zone should be established, ecological technology ,such as technology of constructed wetland, should be spreaded. At same time, pollution control and environment reconstruction should be done well.