With the completion and operation of Zoumatang Canal dredging and expansion project，the boundary condition of water diversion project from the Yangtze to Taihu has changed． Based on requirement analysis of joint operation of Wangyu Ｒiver＇s west bank controlling project and Zoumatang Canal dredging and expansion project，in order to meet the needs of the Taihu Basin and the improvement of regional scale demand，this paper designs some joint operation schemes of Wangyu Ｒiver＇s west bank controlling project and Zoumatang Canal dredging and expansion project，analyzes the effect of these schemes by using the water quantity and quality model of Taihu Basin，proposes the recommended optimal joint operation schemes，which can provide a reference for the scheduling optimization of Wangyu Ｒiver project and regional related projects．