The integrated surface meteorological data processing system is an operational system based on the provincenation unified CIMISS data environment, which can produce in quasireal time the daily, 5day, 10day, monthly, and annual products and meet the needs of the ground meteorological data users after quality control. This paper introduces the development of the integrated realtime meteorological data processing system from the aspects of software requirement analysis, statistical method, function realization, and key technology. By running the strategy configuration, the system can run automatically and regularly, which further enriches the product database of the CIMISS weather data.