Taking into account of the rapid deterioration of water environment in China, as well as the complexity of water environment data, a new way has been proposed for the secure and efficient management of water environment information by using the powerful spatial data and non-spatial data seamless integration capabilities of ARCSDE. Firstly, a discussion has been made about the function, architecture and data storage mode of ARCSDE. Then on this basis, based on ARCSDE9.0+SQLServer2000 model, with the client by the secondary development of MO, constructing a large-scale water quality spatial database management system of Jinlin province. It has been proved by practice that the system is running well and perfect to meet the diverse needs of water quality management.