With the popularization of smart phones and high-speed mobile networks, intelligent public transport query system which is as a public information platform in the city can greatly facilitate people's daily travel. Transport query clients on the Android platform divided into two kinds, one is query static information, such as the transfer scheme, line information, etc. another is the bus real-time queries. In this paper, based on the traditional methods, we design and realize a movable platform for bus querying in real-time, which introduces local database and HTTP connections double query and obtains data by parsing the JSON data. On the basis of the query site and line information, the client can show real-time information of the close-in car on the activity, making the user understanding of the current public transportation system clearly and adjusting travel plan adaptively. Therefore, this project has a great realistic significanc.