The causes of sudden cardiac colic include physiological factors, such as emotional excitement, strenuous exercise, etc., and pathological factors, such as coronary heart disease, aortic stenosis or closure of the aortic valve insufficiency, congenital heart disease, cardiac neurosis and so on. 1. Physiological factors: when emotional excitement, strenuous exercise, the whole body’s oxygen consumption increases, the burden on the heart increases, there will be a sudden cardiac colic. 2. Coronary heart disease: that is, coronary atherosclerotic heart disease, is due to coronary atherosclerosis resulting in narrowing of the coronary artery lumen, often resulting in myocardial ischemia and hypoxia, which leads to the emergence of cardiac colic. If the symptoms persist and are not relieved or even aggravated by oral nitrate drugs, consider acute myocardial infarction, call an ambulance immediately and go to the hospital for treatment. 3. Aortic stenosis or insufficiency: When patients suffer from aortic stenosis or insufficiency, myocardial oxygen consumption increases, coronary artery perfusion decreases, and myocardial ischemia occurs, resulting in cardiac colic. 4. Congenital heart disease: when the patient suffers from congenital heart disease, it will cause heart overload, myocardial ischemia and hypoxia, which will lead to cardiac colic. 5. Cardiac neurosis: patients often due to their own emotional problems, psychological stress, etc. induced cardiac neurosis, will appear similar to the symptoms of cardiac colic, but there is no organic lesions. If the patient recurrent symptoms of cardiac colic, should be timely to the regular hospital, under the guidance of a professional doctor for symptomatic treatment, so as to avoid delays in the condition, resulting in adverse consequences.