With the increasing intensification of meteorological service system, the business construction mode of "cloud" and "terminal" will become the mainstream. The new business system construction of provincial meteorological departments is directly based on the mode of " CMADaaS" as data and computing power support, and "TianJing" to provide unified real-time business monitoring. And the original research and development of the weather service system through the "cloud" transformation into " CMADaaS" and "TianJing". By analyzing the technical points of integration of " CMADaaS" and "TianJing", this paper summarizes the experience in the early system integration process of GuiZhou province, and provides reference and guidance for the smooth integration of business systems of all units in the future.