In this study, it is aimed to analyse the studies made in the mathematics education for mentally disabled students. This study was carried out according to 7 different variables, which are research method, data collection tools, data analysis, sample type, sample size, researchers' area of expertise and distribution of studies through years. In order to actualise these objective, researchers used various search engines such as Ulakbim, Dergipark, Google Academic websites and two state university screening engines and attained a total of 56 academic studies including 20 articles, 28 master's theses and 8 doctoral theses. The attained academic studies were assorted and analyzed through the form prepared by researchers. The data were analyzed according to content analysis. The findings are presented as tables in descriptive form. The obtained data show that, the studies were mostly made with qualitative method (%87,4) and scale (%64,28) was used as data collection tool. Furthermore, it was ascertained that, in analyzed studies, more than other methods graphical analysis method (%64,28) was favoured. It was observed that the researchers generally preferred to study with the students (%64.28) and with a small sample. Finally, it has been determined that the studies conducted on this subject have been conducted by the researchers (%78,5) from the Special Education Department. It was discovered that, the researches gained momentum after 2008 and the first studies started during the 1980s. Based on these findings, it has been suggested to use different methods in the mathematics education for mental deficiency, to accomplish sufficient studies with different sample groups, to work mathematics and special education teachers together and thus to increase the studies on this matter.