Data processing and networking are the key functions in an IVI system. It is an important competitive of the vehicle not only economy and safety but also application of IVI system in the automotive industry. Some automotive interfaces were developed but not adopted because of limitations and difficulty. IVI platforms are developed by automotive OEM and suppliers but not invigorated till now. In this paper, we propose simple in- vehicle data management framework. The data is transform into XML-based data that the applications in the IVI system can access easily. The data management layer is implemented in Java programming language, IVN of the real production vehicle is used to validate functionality and safety. The in-vehicle data management framework works well with native c application and HTML5 application as well as interact with IVN and mobile network in the test environment.