With the rapid popularization of smart-phones,people are more interested in smart-phones for real-time weather information. But most existing client meteorological products are difficult to meet the needs of diverse information service,and Hainan Province has not the client service products of weather oriented decision user. To satisfy this requirement,using the Java language,a decision making meteorological information service platform is developed by a combination of meteorological service information and intelligent mobile terminal. The design of the platform architecture and client applications of this platform is introduced. The key technologies of developing smartphone client application are elaborated. Issues such as intelligent cloud push management, version management, module assembly technology and the combination of GIS and meteorological research techniques are discussed in detail. The system has been put into prac-tice. The result shows that this platform includes a variety of innovative mobile meteorological information service. From that,government departments are no longer limited by time and space to get the meteorological service information at any time and it has high stability and reliability.