The traditional Library System consists of large amount of data related to numbers of books, the author of the book, type of book, and many more. The managing of such data in entry book is difficult and time-consuming. The technology has developed nowadays so that we can implement that technology in Library Management. The use of Data Mining in Library Management System allows identifying different users and books too. It will also provide much more facilities and services to users. Despite from saving time, it will also enhance the use of Library in a reliable way. The obtained benefits can improve and increase the access to information, enabling a significant advance in education. Some data mining techniques encompassed in this research include segmentation techniques to define the behavior of the users in Libraries, in addition to the use of recommendation techniques for more efficient interaction with users. The Digital Library is future of Library system, which provides multiple benefits and reduces the Human work.