Cardiovascular disease is the leading cause of death in the world. The influence of diet on atherosclerotic cardiovascular disease (ASCVD) should not be underestimated. In 2022, the American College for Preventive Cardiology (ASPC) issued guidelines, which emphasized the importance of changing dietary patterns for the prevention of ASCVD and its risk factors, recommended the best diet for ASCVD prevention, and discussed dietary recommendations for ASCVD prevention in special populations. This paper interprets this guideline, aiming to provide help for clinical practice.