The present study aims to examine the factors affecting marital life satisfaction. The research method is descriptive-analytical and based on library resources. According to the findings, marital satisfaction is a state in which the husband and wife feel happiness and satisfaction from their marriage and being together. This state is influenced by various factors such as the mutual understanding between husband and wife regarding each other’s behaviors and characteristics, their attitude toward the role of communication in marital life, the way conflicts and disputes are resolved, the level of satisfaction with family financial management, agreement on leisure time usage, satisfaction with sexual and emotional relationships, agreement on having children and its effect on marital relations, harmony of feelings and interests related to friends and relatives, satisfaction with different marital roles, and religious beliefs and practices in marital life. Marital satisfaction is one of the most important determinants of the healthy functioning of the family institution. Marital satisfaction refers to the subjective feeling of contentment, satisfaction, and pleasure of a husband and wife in their relationship. Various factors affect couples’ marital satisfaction, including satisfaction with the spouse’s temperament, trust, loyalty, and love, as well as the spouse’s income and employment.