Along with the GPS navigation applications development, location service concept has changed and its services has changed from single location information services to integration application services that integrate many network application services, so that it can provide individual, personalized service for users. At one time, Internet needs a simple, available method to organize a lot of network application services. XML-based Web Service technology can solve it, but the application programs need to code and compile while the workflow has modified. This paper presents a location service integration strategy, it uses extended XML technology, and domain concept and dynamic invoking mechanism to realize system that has strongly usable, extensible, and maintainable.