Many patients are afraid that they have coronary heart disease, but chest tightness is a very non-specific symptom, as the heart is a very physical organ, which means that many psychological and emotional factors can also cause the symptoms of chest tightness. To determine whether a patient’s chest tightness is coronary artery disease, we need to integrate various risk factors for coronary artery disease, such as age, gender, whether the patient is a smoker, whether the patient is obese, whether the patient is combined with high blood pressure, hypertension, diabetes, etc., whether the patient is in a sedentary work environment for a long time, whether the chest tightness is related to activity, whether the attack is paroxysmal or persistent, etc. Is there any change in the ECG during the attack? Is there any evidence of peripheral atherosclerosis, etc.? All of these need to see a doctor, do not simply because of chest tightness to their own cap of coronary heart disease, increasing the psychological burden or repeatedly turn to the doctor waste of medical resources.