Miracle MCG®Pro is the world's first non-liquid helium magnetocardiograph using 64-channel magnetocardiogram detectors. The new architecture design can solve the technical challenges brought by high-density magnetocardiogram detection arrays. The innovative use of active closed-loop tracking compensation system ensures no crosstalk between detectors, improves the imaging spatial resolution to the world's leading millimeter level, and enables more refined cardiac magnetic field analysis; at the same time, it can meet the clinical needs of covering the whole heart and its surrounding magnetic field of people of different body types, obtain more comprehensive cardiac electrical activity information, and help clinical experts to explore and expand the application of magnetocardiography in innovative fields such as myocardial ischemia diagnosis, arrhythmia diagnosis, electrophysiological abnormal lesion location and fetal congenital heart disease diagnosis.