the level of quality in these libraries, which means that improving the general reality of these institutions to ensure adequate satisfaction by the beneficiaries of the services provided, and this is what has been worked on in this The research, as one of the most important quality measures in libraries and information centers was applied (LibQUAL + ) in one of the most important and oldest central university libraries, namely, the Central Library of the University of Baghdad in its two Al-Jadiriya and Ministerial locations, and the sample of beneficiaries to whom the questionnaire was distributed reached 75 beneficiaries, and it was retrieved (68) A form from the beneficiaries distributed over the two libraries, using the case approach as a means to achieve the most important goals drawn in this research, the most prominent of which is to reach true quality levels and find appropriate solutions to remedy defects, if any, in addition to reaching the desired results from them, the most important of which were: - There is a real gap in the library services provided, whether (the satisfaction gap) (the gap that distinguishes) the fact that the library provides services that are less than what is required by the beneficiary, or he imagines that he will receive them, and this is the most important goal achieved by the scale in reaching this result. As for the most important recommendations, they were - Requesting the higher administrative leaderships of universities to reconsider the support directed to these important institutions by increasing support, whether material or moral, that ultimately serves the universitys scientific research movement, which has become today one of the pillars of the international rankings of universities.