Background: The elderly population in Iran is increasing .  The aim of this study is the survey of satisfaction rate and the effective factors on the elderly - aged peoples  satisfaction regarding to the given services in the hospitals affiliated to the Tehran university of medical sciences.

Materials & Methods: This research is a descriptive - analytical study with applied results. It shows the problems cross - section ally.The research society involves the whole elderly - aged people whit 65 years old   and more than that used the bedridden services of the hospitals affiliated to the Tehran university of medical sciences. The sample involves 360 elderly. For collecting the data, a questionnaire with three parts was used. The validity of questionnaire by the content measurement and the reliability of questionnaire by test re test (r = 0.84) were achieved. And also we used SPSS software for data analysis.

Results: : Results showed that 25/6%patients from management type, 41/9%from facilities ,17/2% from behavior personality and 30/3% from public services are dissatisfaction.  A total of 12 variable were analyzed, and the results showed that: The education level, age, sex, type of refer, dealing with the bed shortage and occupations have the meaningful relation with their satisfaction rate. The one - variable - analyzers in the logistic regration  model showed that among the whole meaningful variables, the education level has the strongest relation with satisfaction. With increasing the education level, the satisfaction rate have been decreased.

Conclusion: Due to results satisfaction rate among participant of this study is good and accepted. Using of results is effective step in increase productivity services and further evaluation needed to be done for functional styles patient elderly satisfaction.