Background& Aims: Coronary artery disease is a blood vessel disorder that consists of a common form of atherosclerosis. In Coronary heart disease, arteries become narrowed or blocked due to atherosclerosis develops in the blood vessel of the heart. With the Objective to assess the effectiveness of behavioural counselling for a healthy lifestyle among administrative staff to prevent coronary artery disease and to find out the association between demographic variables, awareness, and practice score was carried out. Materials and Methods: A pre-experimental design with one group pretest and the post-test method was selected for the study. A total of 110 administrative staff were selected by using a consecutive sampling technique. Self-administered coronary risk status assessment of normal adults, Self-structured Awareness Questionnaire Regarding the Healthy Lifestyle, Self-reported health behavior practice checklist was used for data collection. Counselling is given to the participants to adopt a healthy lifestyle for the prevention of coronary artery disease.