This article aims to explain: (1) the factors that caused students of the PBA FTK UIN Mataram departemen difficulties in writing Arabic theses, (2) management of majors in improving the ability to write Arabic-language thesis students of PBA FTK UIN Mataram departemen. The approach used in this study was a qualitative approach with a case study design. The data sources in this study were students majoring in PBA departemen, PBA alumni, and permanent lecturers majoring in PBA. Data collection techniques used were interviews, documentation studies and observations while data analysis was carried out using descriptive-qualitative analysis techniques. The results of this study are: (1) The causes of students majoring in PBA FTK UIN Mataram departemen difficulties in writing Arabic theses are (a) input, many PBA students come from high school or public school with minimal basic language. (b) the willingness to speak Arabic in students is still low. (c) department policies are still not firm, namely still giving students the freedom to write Indonesian theses. (d) department facilities and infrastructure are still minimal, namely Arabic books or references are still lacking. (2) Management of majors in improving the ability to write Arabic theses for students majoring in PBA FTK UIN mataram namely (a) Growing interest and providing awareness to students. (b) Making policies requires students to write Arabic language theses and strive for students to communicate in Arabic, at least when in PBA. (c) Making teaching materials for all subjects in PBA majors. (d) Implementing the IQF curriculum. (e) Carry out produckbased practicum activities. (f ) Making guidelines for Arabic thesis writing