Background: Coronary artery disease have been leading cause of morbidity and mortality in India. Recent trends indicate that the disease has escalated to younger age groups also. Sometimes, a clot can obstruct the flow of blood to the heart muscle. Coronary artery disease commonly causes angina pectoris, shortness of breath, myocardial infarction, or heart attack. Coronary artery disease is the most common type of heart disease in the India, where it accounts for 370,000 deaths every year. Aim: The aim of the study was to evaluate the effectiveness of structured teaching programme in terms of knowledge regarding Modifiable Risk Factors And Lifestyle Modification Among Coronary Artery Disease Patients, Methodology: Pre-experimental research design was adopted and Non-probability purposive sampling technique was used to collect the sample from 30 coronary artery disease patient admitted in cardiology ward. Data obtained was analysed and interpreted in the light of the objectives using both descriptive and inferential statistics. Results: The findings of the study revealed that the mean post-test knowledge of the coronary artery disease patients admitted in cardiology ward was significantly higher than the mean pre- test knowledge score. Conclusion: Thus, the research study findings indicated that the structured teaching programme was effective in improving the knowledge of coronary artery disease patient admitted in the cardiology ward.