In order to accelerate the intensification and cloud transformation of Fujian Province’s meteorological operation system, it is necessary to rely on the Fujian Meteorological Big Data Cloud Platform (CMADaaS·Fujian) to integrate the system. This paper introduces the general situation, overall structure and function of (CMADaaS·Fujian). The technical scheme and realization method of Fujian Meteorological Integrated Operation Platform integrated into CMADaaS are emphasized. Application integration has been realized and put into operation from six aspects: platform integration into CMADaaS, data source switching to CMADaaS, algorithm integration into the processing line, data products stored into CMADaaS, system monitor information stored in the Real-Time-Monitoring-System (Tianjin), and the front-end page transformation. After integration, the whole process of data aggregation, processing and service of the platform is further optimized and standardized, and the operating efficiency and access speed of the system are significantly improved so as to provide references for other operation systems to integrate into CMADaas.