en عمومى General پژوهشي Research <strong>Background</strong>: The present study is applied in terms of purpose and is descriptive-analytical in terms of method and uses a questionnaire. The aim of this study was to investigate the relationship between parents&#39; quality of life and social adjustment of mentally retarded children.<span dir="RTL"></span><br> <strong>Method</strong> : The statistical population was mothers of mentally retarded children in Tehran, with a sample of 50 people. The validity of the questionnaire questions was confirmed by professors and experts, its reliability was calculated by Cronbach&#39;s alpha test of 0.78. SPSS software was used to analyze the data obtained from the questionnaire. Kolmogorov-Smirnov test showed that the data were abnormal. Finally, the non-parametric Spearman test was used to test the research hypotheses.<span dir="RTL"></span><br> <strong>Results</strong> : The results of Spearman test showed that there is a positive and significant relationship between parents&#39; quality of life and social adjustment of mentally retarded children with 95% confidence level.<span dir="RTL"></span><br> <strong>Conclusion</strong>: According to the final result of the research, with the increase of the perceived social support of the parents, the social adjustment of the children with educable mental disabilities also increases. Also, as the level of education of parents has increased, so has the level of social adjustment of children.<span dir="RTL"></span> Quality Of Life, Parents, Social Adjustment, Mentally Retarded Children. 108 113 http://intjmi.com/browse.php?a_code=A-10-1-388&slc_lang=en&sid=1 Zahra Sadeqi 10031947532846004478 10031947532846004478 Yes M.A. in Curriculum Planning, Payame Noor University, Ray Center, Tehran,