Due to the operation of the Three Gorges junction, it becomes unavoidable to conduct waterway regulation project during the flood period in the middle and lower reaches of the Yangtze River. Taking measures including establishment of a sound quality monitoring system, laying stress on construction monitoring, focusing on the prevention of common quality defects, implementing the safety responsibility of supervision, implementation of essential safety of new technology and method of flood period, strengthening the construction protection for the working staff, controlling construction of major hazard sources during flood period, the quality and safety for the construction of the Yangtze River waterway regulation are ensured.