International Journal of Information Studies Krishnan.V, Raja. S, Sugandhi. V 11 3 2019 10.6025/ijis/2019/11/3/87-89 http://www.dline.info/ijis/fulltext/v11n3/ijisv11n3_4.pdf Management Information system as an integrated system of man and machine for providing the information to the operations, the management, and the decision- making functions in the organization. An MIS deals with information that is systematically and routinely collected in accordance with a well – defined a set of rules. This paper describes the concept of management information system, features of MIS, and main functions of management information systems in the library in a conceptual approach.