Introduction: The heart is a muscular organ about the size of 250 grams. With every heartbeat, the heart pumps blood that caries oxygen and nutrients to all parts of the body. The heart beats about 70 times per minute in a person at rest. The heart rate increases when a person is active or experience strong emotions. Heart muscles receive blood supply from a system of coronary arteries. A good blood supply is vital for the normal function of the heart. Material/Method: It was a pre experimental study conducted amongst 60 consented adults of village Daultabad, Gurugram. Data was collected through a structured knowledge questionnaire and provide community based educational program on knowledge regarding coronary artery disease(CAD). Result: Inthat 83.33% had moderate risk and 16.66% had severe risk in pre test which was improved in post test that is 96.66%.In that 13.33% had good knowledge and 86.66% had excellent knowledge in pre test which was improved by 100%of sample had excellent knowledge in post test knowledge score. The pre test mean score was 27.21 which was increased in post test mean score 34.33 for risk assessment. The pre test mean score was 22.5 which was increased in post test mean knowledge score was 27.7. “t” value was computed to find the level of significance between mean and it was observed highly significant(‘t’=14.82) at p less than 0.005. knowledge was significant with smoking, no association found between knowledge and other demographic variables. Conclusion: Community based educational program will be effective in improving knowledge regarding prevention of coronary artery disease among adults of village Daultabad, Gurugram.