Location-Based service and mobile device brings various new applications to our daily life in recent years. With the popularity of location-based applications, the target positioning place gradually transformed from outdoor to indoor. Simultaneously, the progress of various wireless information transmission technologies provides a great opportunity of indoor location-based service to market. In this paper, a practical application of indoor location-based service on mobile device with bluetooth low energy will be discussed. The coverage relevant fields includes hardware, software, user experience, design and architecture.