The integration of hydrological monitoring data is studied in view of the problems of scattered construction and management of hydrological monitoring data，inconsistent information of monitoring stations，inconsistent data standards and diverse flow processes of real-time data. It combs the monitoring stations of the whole province and constructs the management system of the station network of the whole province，providing the unified data service for the business application system，formulating the unified hydrological monitoring database standard，and hydrological monitoring data base，so as to achieve the goal of unified standard，unified data source and unified application. Finally，it provides efficient hydrological data service and meets the needs of modern application of hydrological data service and sharing of intelligent water conservancy construction.