Associated health-related quality of life (QoL) is one of the criteria for assessing the severity of disease in patients with stable coronary heart disease and the efficiency of treatment, including planned revascularization. The main tool of QoL measuring is questionnaire. General questionnaires cover wide range of features common to many diseases. Instead, specific questionnaires are used for a more detailed study of QoL changes in individual nosologies. The determining factors of QoL in patients with stable coronary artery disease are age, sex, sociodemographic factors, clinical symptoms (most often – angina pectoris and/or signs of heart failure), concomitant diseases and conditions, side effects of the treatment, including revascularization. The analysis of impact of coronary artery bypass grafting and coronary stenting versus optimal medical therapy on QoL in patients with stable coronary artery disease is performed at different stages of observation. Indicators of QoL after coronary artery bypass grafting were better at long-term compared to short-term period.