Automation is the process of using the machinery for easily working and saving human power and time. The impact of automation has changed the library systems into an automated one in its operations and functions. The users need not search shelf by shelf to find out a book. Rather they can check for their books simply sitting in front of the desktop or mobile phones. This paper focuses on the automation of the library, its requirements, and modules in this web application. Library Automation which started in late 70’s in few special libraries have now reached in most of the university libraries. There are several reasons for Library Automation. Through Library Automation a considerable saving in effort, time and resources which are needed in the manual process is achieved.