In order to allow tourists to quickly access to weather and travel information and plan their tourist routes reasonably, the Java development kit JDK 17 and Myeclipse development tools are used to design and implement an Androidbased weather APP. The whole system is composed of the mobile client, background management system, Web server, and API interface system. This paper focuses on the design and implementation of main function modules and the API interface system of the APP. The APP aggregates meteorological, geographic and scenic information and uses the IDV graphical products for the first time in China to provide users timely with a convenience access to such service information as tourism destination weather forecasts, traffic meteorology, tourist attractions and others, to enhance the tourism meteorology service capabilities. The developed API interface system integrates the service product resources of the meteorological department, serving not only mobile phone APPs, but also the data querying for meteorological service products on the thirdparty websites to achieve the optimal resource sharing.