The ECG characteristics of typical angina pectoris are that the heart shows temporary ST-segment shift, including ST-segment upward or downward shift, sometimes accompanied by T-wave changes or conduction block and the appearance of arrhythmias during the angina pectoris attack. such changes in ST-T, which appear dynamically with the relief and onset of angina pectoris symptoms, are the ECG characteristics of typical angina pectoris. According to this feature of angina, dynamic ECG examination and exercise load test can be selectively performed to clarify the diagnosis of angina by the ECG changes before, during and after exercise.