Due to Invention of Printing Press There Has Been an Explosion In the Recorded Knowledge .This Explosion Has Needed to Arrange the Documents. Documentalist and Computer Expert Make a System to Arrange the Document. These Documents Spread Over the World Through Computer Technology .This Technology Known Information Technology. Information Technology Is Currently Taking Center Stage and Transforming a Whole World into A Global Village With a Global Economy. Information Technology Reduce the Time, Distance, Space, and So Many Things. This Paper Discussed the Impact of Information Technology In Libraries.