[Objective] The ecological restoration project for the river network of Taihu Lake basin and its effects were analyzed and compared in order to provid some bases for the environmental management and water quality improvement of the catchment.[Methods] Xiazhuang River, Luoxi River, Fenggou River of Taihu Lake basin were selected to carry out three projects as composite tower bio-filter treatment process, five-levels-load reduction treatment process and ecological landscape restoration process, respectively. After three rivers' operation, the effects of these three demonstration projects were compared.[Results] The three ecological restoration projects had a effectiveness rank of Xiazhuang River >Luoxi River >Fenggou River. Thus, the ability of remove pollutants of the three ecological restoration processes ranked as:composite tower bio-filter treatment process >five-levels-load reduction treatment process >ecological landscape restoration process.[Conclusion] The three technologies can all effectively remove nitrogen, phosphorus and other pollutants of watercourse; They also have good ecological landscape. Considered the room of design and use optimization in river network, they could formed the key technologies of water quality improvement for river network.