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With the development of the social economy, meteorological big data are an important part of national big data basic strategic resources. However, the existing provincial and municipal intensive meteorological big data environment is built in the meteorological business intranet, while the societyoriented meteorological data service has some problems, such as the low degree of intensification, poor timeliness, less data, and high security risks. Therefore, the establishment of a unified, efficient and safe meteorological big data center for the external network environment is an urgent demand for the development of meteorological service socialization. The meteorological big data service platform adopts GoldenGate and sersync + rsync technology to realize the realtime and stable triggering secondlevel data synchronization between intranet and DMZ area. The unified access interface design of cross platform, multilanguage development, and standardized call allows to achieve the high concurrency and stable data response requests, and timesharing classification of user data access control allows to achieve the security control of data permissions. The platform provides efficient, safe and authoritative meteorological big data services to Internet users through the dual network control of firewall.