Coronary heart disease includes various types such as insidious coronary heart disease, stable angina, and myocardial infarction. In the early stage, there may be no obvious symptoms, or a series of symptoms such as pain and urgency in the precordial area, chest tightness, palpitations, etc. may occur. The above symptoms appear equally in both men and women. 1. Hidden coronary artery disease: there are no typical clinical symptoms in the early stage or even throughout the disease cycle, but there is still ischemic damage to the myocardium, which can only be detected after dynamic electrocardiography and other tests. 2. Stable angina pectoris: Early stage may be asymptomatic, or manifested as chest tightness, palpitation, headache, precordial discomfort or pain caused by exertion, strenuous exercise, emotional excitement, etc., which is usually relieved after resting or taking certain medications. 3. Myocardial infarction: some coronary heart disease may lead to myocardial infarction at an early stage, manifested as precordial pain, respiratory urgency or dyspnea, dizziness and even impaired consciousness, rest does not relieve the symptoms, the need for timely emergency. There is no significant difference between men and women in terms of symptoms of coronary heart disease. Both men and women are advised to go to the hospital in time when the above symptoms occur.