An abnormal ECG is firstly recommended to review the ECG again, and further tests can be done by cardiac markers cardiac ultrasound, ambulatory electrocardiogram, coronary artery CT, coronary angiography, and so on. Abnormal ECG may be caused by various reasons of arrhythmia, or acute heart attack, myocardial ischemia and other conditions. If there is no obvious discomfort, dynamic electrocardiogram and cardiac ultrasound should be perfected first, and myocardial markers, such as natriuretic titanium, should be examined if necessary, and we should wait for the results to see if further examination is needed. If there are uncomfortable symptoms, dynamic observation of ECG changes, timely improvement of myocardial markers, if necessary, coronary artery CT, coronary angiography, and wait for the symptoms to be relieved before the relevant tests. If the ECG is not normal, you need to actively consult the doctor to clarify the cause of the disease and then carry out targeted treatment.