Background: Marital satisfaction is the correspondence between the expectations a person has of marital life and what one might experience in his life.  The present study seeks to compare the marital satisfaction, marital intimacy, sexual satisfaction, and marital adjustment of married persons (various age difference) with age and duration of marriage control.
Methods: It is a causal-comparative design and the research population consists of all married students at Ahwaz Islamic Azad University in 2016 - 2017.  This sample size consists of 276 subjects who were selected by convenience sampling method. A sample size of at least 30 people per group is recommended in a casual comparative study. Data have been collected via questionnaires. The data have been analyzed using SPSS software version 20 and Levene’s Test, MANOVA, MANCOVA tests.
Results: The results show that there is no significant difference between marital satisfaction, marital intimacy, sexual satisfaction, and marital adjustment in married people with various age differences (p˃0/05). Furthermore, the results also show that there is no significant difference between marital satisfaction, marital intimacy, sexual satisfaction, and marital adjustment in married people (various age differences) with age and duration of marriage control (p˃0/05).
Conclusion:  It should not be assumed that any marriage with the age difference is at risk. The common interests and aspirations, high education, and other similar issues will have such an impact on other changes in many cases that will make the marriage very comfortable.