The study program of Al-Qur’an and Tafsir Science has many hafiz students, who already have a fluent memorization (mutqin) before entering this department, but after entering this department the quality (mutqin) decreased. In fact, this study program teaches the quranic sciences. Supposedly, the hafiz} in this department should be more enthusiastic about repeating their memorization so that they are still mutqin. This research aims to find out the factors of decreasing the hafiz} memorization quality, and the preventive measures that must be taken by the hafiz} and department. This research is field research with qualitative approach. Data collection techniques used are interviews, observation, and documentation. The results of this research are, first, the hafiz} had lost control of their memorization, so performing muraja’ah depends on their own spirit, because the focus of the IAT study program is not on tahfiz}, but on quranic sciences studies. There are several factors of murajaah was not realized are, do not live in the institution of tahfiz} Al-Quran, do not have hafiz} friend, do not have muhafiz}, the dence of activity, watch Korean movie, and the lack of activities to apply the Qur’an memorization. Second, preventive measures for hafiz} are divided into three categories, according to the amount of memorization decrease, for high category they are, understand the interpretation of Juz that is being repeated, increase the amount of memorization reports, by targeting memorization, always get updated information related to hifz al quran competition, ready for quran memorization testing every two days. Medium category; Join JHQ then increase quran memorization reports quantity with JHQ partners, take part in various seminars as a form of improving the quality of quran teachers, learn together about the interpretation of verse that was murajaah, and increasing focus in both forums. Low category; Make a fixed schedule for reporting each other the memorization with their partner, ready to be tested a half mutqin memorization in Schedule by partner, looking for scientific discussion forums, and apply knowledge from the FORDIKAT forum to students according to their needs, while the preventive measures for the department are about holding events related to tafsir Al-Qur’an, recommend the hafiz} to hifz} al-Qur’an event, and conducting alumni empowerment training.