With the popularity of mobile devices, location services have been deep into everyone's life, and the positioning of data collection is an important goal of data analysis. However, the current applications mainly focus on outdoor device such as WIFI positioning technology was discussed the most often and also got a lot of well research results. This paper mainly discusses the application of Beacon technology in the information service of the library, and understands the user for the acceptance of new technology. Beacon technology is a combination of user and space environment of intelligent technology, beacon is a low-power Bluetooth sensor technology, the library can use this equipment to understand the use of library physical space and collections. The library can be combined with a smart mobile device via Beacon technology, allows users to receive the latest library information, users can also search on the smart mobile devices on various collections. Users can also direct the user to the bookshelf where the destination book is located, depending on the search needs entered by the user. This study discusses the user's intention to use Beacon in combination with the technology acceptance model and the innovation diffusion theory.