Abstract: The incidence of cardiovascular disease has increased over the past few decades and it remains a leading cause of sudden death. How to improve early detection and diagnosis of myocardial ischemia to prevent sudden cardiac death is very important. Magnetocardiogram (MCG) system based on quantum technology can detect the magnetic field generated by the excitation of myocardial cells around the heart, record and process this cardiac magnetic field information, analyze its changing characteristics, and provide valuable reference for clinical diagnosis of heart diseases such as myocardial ischemia. The current application of MCG in hospitals, various medical institutions and other research units, due to differences in technical routes, equipment performance and analysis methods, remains a problem of different diagnosis criteria, which has a serious impact on its application. Based on the latest research from home and abroad, and take into consideration of the specific situation in China, domestic experts in this field provide a set of clinical diagnostic requirements for MCG of myocardial ischemia.