Ziyahe Control Gate is located in Xiqing District, Tianjin, at the lower mouth of Northeast Dian, 15km from the confluence of the confluence of Daqing River and Ziyahe River. It is the control project of the western defense line of the urban area of Tianjin. The only passage in the district should ensure the safety of the urban area of Tianjin if it encounters major floods. It is a comprehensive project focusing on flood control and water storage irrigation. In recent years, due to the severe water shortage in Tianjin, in order to rationally allocate water resources and communicate between the north and south water systems, the geographical location of the control gate and its project are particularly important, so The construction of the sluice is particularly important, so the construction of the sluice can not only ensure the safety of Tianjin ’s flood control but also be used for communication between the north and south water systems, so the construction of the sluice is very necessary.