Recently, due to more flooding, schistosomiasis is in expanding tendency in some areas. With ThreeGorges Engineering progress, schistosomiasis occurred potentially in Three Gorges reservoir. In order to controlthe disease, some methods must be applied, e.g. Chemicals, biological measures. To some extent every way has itsspecific effect. However, the vital way is improving the environment and reducing the amount of snails. One of theeffective ways is conducting forestry ecological engineering that focuses on snail control and schistosomiasisprevention. The practical ways cover such as pollution controlling, ditches surface hardening. Especially forwater-level-fluctuation zone, conducting forestry ecological engineering to improve environment to prevent snailspropagation is significant and vital. By operating the project environment could be greatly improved and peoplesliving conditions would be bettered.