The practice of construction and management of hidden engineerings of key leveeon Yangtze River isintroduced.According to the features of levee engineering,acompletequality assurance system,including the deputy agency,supervision,design and contractors for the legal person of object at every levee section,is established.In the process of construction,the operation of the quality assurance system has played an important role in securing construction quality and has ensured the quality of important levee engineerings.