The ecological environment of west region is an important part of the whole ecological environment system of China. The west region has plentiful water resource. But the ecology of water is anxious, it is urgent to protect the water. A consummation ecology benefit compensate of water has significances for west China. This paper summaries the positive role of the ecology benefit compensate system for west China , and analyze the present situation of ecology benefit compensate system in west China, giving some suggestion on its establishment and consummation.