<div><p class="Keywords"><strong>Objective: </strong>ST elevation myocardial infarction is the most common myocardial infarction cases. The main intervention of this case is primary percutaneous coronary intervention (PPCI). After PPCI, quality of life in STEMI patients depend on their ability to control the risk factors of reinfarction. In this condition, patients need family support. Therefore, this study aimed to identify the relationship between family support and quality of patients’ life after PPCI.<strong></strong></p><p class="Keywords"><strong>Methods: </strong>This was a descriptive study with cross sectional design. We recruited a purposive sample of 34 STEMI post- Primary PCI patients. We employed the modified family support questionnaire (Hensarling Diabetes Family Support Scale) and the quality of life questionnaire to collect data. Data, then, were analyzed using univariate and bivariate analyses.<strong></strong></p><p class="Keywords"><strong>Results: </strong>The mean score of the family support was 64.44, with the minimum score of 21 and maximum score of 75. More patients received good family support than those who received poor family support. On the other hand, the mean score of patients’ life quality was 68.36, ranging from 25.1-98.43. There was a weak and positive correlation between family support and quality of patients’ life. However, the relationship was insignificant.<strong> </strong></p><p class="Keywords"><strong>Conclusion: </strong>Family support was not significantly related to quality of STEMI patients’ life. Further studies to identify factors contributing to the quality of STEI patients’ life are needed. </p><p class="Keywords"><strong>Key words: </strong>family support, percutaneous coronary intervention, quality of life, ST elevation myocardial infarction <strong></strong></p></div>