Cardiac discomfort after being frightened is usually physiological and can be relieved after rest; if the symptoms continue to be unrelieved, it may be due to angina pectoris, which can be treated with drugs such as nitroglycerin. After being frightened, emotional excitement will cause the body to be in a state of stress, the heart reflex contraction force increases, the heart rate increases, at this time there may be cardiac discomfort, this symptom is usually physiological, no special treatment, can be relieved after rest. However, prolonged unrelieved discomfort in the precordial region, or symptoms such as a sense of dying or dyspnea may be angina pectoris. Angina pectoris can be intervened by taking nitrate drugs such as nitroglycerin orally. If the symptoms remain unrelieved after taking the drug, myocardial infarction may have occurred, and need to be sent to the doctor in time for thrombolytic therapy with drugs such as urokinase or interventional surgery intervention. In addition, cardiac arrhythmias and other diseases may also cause cardiac discomfort, and it is recommended to consult a physician when symptoms occur. The above medications should be used under the supervision of a clinician.