A user visits a library only when his/her purpose has been solved. Specifically, in Institutional Libraries, the users are students and faculty where the purpose of visit to library varies from one another. An attempt was made to find out the Users’ persistence on visiting an institutional library by analysing separately the faculty members and students for different institutions specifically all R.I.E. libraries of India, a user visits library with multi purposes. So, for assessment of the purposes of use, a 5 - point scale was used for the survey where 5 is for very often to 1 for never. The respondents covering 1577 student users and 378 faculty users from all the R.I.E.s were asked to give their ratings against all the 23 identified purposes. Purposes of visiting to library by student users were found to be for preparing for project/ seminar, reading study books, Xerox of course materials, reading newspapers, magazines etc. and that for faculties are for reading newspapers and magazines, to find information for research, for preparing class notes, preparing for lecture, writing journal article and enhancing knowledge etc.