In recent years, the concept of smart library has gradually become a new research hotspot. To build a smart library, it is necessary to combine closely with the times, innovate the reader service concept and thought of the library by modern technology means, and realize the long-term development of the library. This paper introduces the definition of smart library and the development trend of smart library in China. On the basis of analyzing the problems, it puts forward some suggestions to improve the user experience of readers.