Abstract: Myocardial infarction is a severe cardiovascular disease characterized by inflammation reaction and necrosis of myocardial cells. Moderate inflammatory reaction is beneficial for injury repair following myocardial infarction, but excessive inflammatory reaction may lead to severe complications such as malignant arrhythmias and heart failure. With the advancement of functional imaging techniques, visualization of inflammatory infiltration in myocardial infarction has emerged as a significant study area. Techniques including cardiac magnetic resonance imaging, PET, SPECT and others. The authors reviewed the research progress, clinical applications and trends in development of visualization techniques of inflammatory infiltration in myocardial infarction, which aimed to provide ideas for clinical assessment, diagnosis and treatment of the disease.