In order to realize the integration of observation data from municipal meteorological departments, water management and hydrological departments, as well as to make data of the Automatic Weather Station (AWS) available to meteorological units of the other provinces, the premode sharing network is built, based on network protocols and data exchange methods such as FTP and Web Service. This sharing network makes use of the objectoriented programming to integrate data from different information sources. It realizes the multisource data integration under the Sql Server database environment. The establishment of the multisource data integration mechanism and the operating system realizes information sharing among different departments, and the sharing of data from AWS’s among different provinces, which provides more comprehensive basic observation data for the monitoring and warning of local meteorological departments.