Physical examination of ECG Q wave abnormality whether it is important or not needs to be evaluated in conjunction with the symptoms and related examination. Common causes include normal conditions, acute myocardial infarction, and myocardial diseases. 1. Normal condition: if the body type is thin and becomes pendulous heart or the body type is fat and becomes transverse heart, Q wave abnormality can appear, but the patient often does not have any symptom and the cardiac ultrasound examination, the result suggests that there is no need to intervene. 2. Acute myocardial infarction: patients often with persistent chest pain, panic, shortness of breath, chest tightness, different parts of myocardial infarction may appear Q wave abnormality in the corresponding leads of electrocardiogram, which suggests the seriousness of the condition, and need urgent treatment for imaging, implantation of stents if necessary. 3. Myocardial diseases: such as hypertrophic cardiomyopathy, pulmonary cardiomyopathy, severe myocarditis, severe myocardial ischemia, etc., all of them can have Q wave abnormalities, and need to do further cardiac ultrasound to make a clear diagnosis, and comply with the doctor’s instructions for long-term oral drug treatment, and in severe cases, surgical treatment can be considered. When Q wave abnormality is found in ECG examination, further examination should be done to clarify the cause of the disease, and treatment should be carried out under the guidance of doctors.