Introduction: Emotional intelligence is considered as a most important component of mental and physical health. The main aim of the present study was to study the effects of emotional intelligence training on mental health among patients hospitalized in caediology department of Shahid Modares Hospital, Tehran, Iran. Materials and Methods: This research was a quasi-experimental design and the corpus was all hospitalized women with coronary artery disease. Of these, 30 were selected by accessible sampling and were randomly divided into two groups: experimental and control groups. After evaluatation of mental health by general health questionnaire (GHQ), Emotional intelligence training course was taught to the experimental group in seven Ninety - minute sessions. After completion of the training process, both experimental and control groups were evaluated by the GHQ questionnaires again. Results: The findings revealed that emotional intelligence training course increased the rate of mental health as well as different components of social performance and reduced the rate of depression and physical symptoms in experimental group. However, this training had no effect on anxiety level in these patients. Conclusion: The emotional intelligence training has an important role in increase the rate of mental health among women with coronary artery disease. This training can be used in revention and remedial interventions programs, like educational programs for patients with cardiovascular disease.