The objective of the present study was to compare the features of mental health and marital intimacy between mothers with healthy children and mothers with children who had been under congenital heart diseases surgery. The applied method was causal-comparative. The statistical community included 100 mothers. In order to gather data, two questionnaires were applied: Bagarozzi marital intimacy and mental health (DASS) questionnaires. The sampling method was available. In order to analyze data, F-test in two independent communities was applied by multivariate analysis of variance (MANOVA). It was concluded that there was a significant difference in marital intimacy and mental health between mothers with children that had been under congenital heart diseases surgery and mothers with healthy children. The marital intimacy and mental health of mothers with healthy children was significantly more than mothers with children suffered from heart disease. There was a significant difference between the dimensions of marital intimacy and mental health of mothers with children who had been under congenital heart diseases surgery and mothers with healthy children