With the development of society and the improvement of living standards,cardiovascular disease has become one of the main health problems that troubles people.Among them,coronary heart disease,as a common cardiovascular disease,poses a serious challenge to human health.Coronary heart disease often develops rapidly and causes serious damage to the heart,so early and accurate diagnosis is particularly important.In the diagnosis of coronary heart disease,medical imaging technology provides accurate diagnostic evidence for doctors by obtaining information on the morphology,function,and metabolism of the internal structure and organs of the human body.Based on this,this article focuses on the application strategies of modern medical imaging technology in the diagnosis of coronary heart disease.This article mainly introduces the application and effects of CT coronary artery imaging,magnetic resonance imaging(MRI),nuclear medicine,and echocardiography.