The aim of this study was to determine the effects of progressive muscle relaxation on sleep quality pre-university students. In this clinical trial, 46 pre-university students from public schools Malayer city that inclusion criteria are randomized into two groups of progressive muscle relaxation (test) and take control. In the case group of progressive muscle relaxation training program will be asked to do this once a day for a month. The instruments are "Pittsburgh Sleep Quality Index", sheet relaxation and demographic questionnaire. The sleep quality of the samples using "Pittsburgh Sleep Quality Index", will be measured at the beginning and end of the intervention. Inclusion criteria include: Students who do not have any history of sleep disorders. Mourning history and history of hospitalization in the last 6 months have not, do not have any history of drug use and the completion of "Pittsburgh Sleep Quality Index", 5 and have more business and exclusion criteria were: non-completion questionnaire , failure to attend educational sessions, participate in any class consultation with psychiatrists, occurring situations disaster near death, parental divorce, accident, illness and possible hospitalization during treatment, do relaxation program forward less than 15 times intervention