Fear of heights does not usually result in cardiac arrest. Agoraphobia is a symptom of intense fear and anxiety about high places or things that are high up that does not match the actual situation. The patient has a sense of fear of falling when standing on a high place, and is always worried that something terrible will happen. Fear of heights belongs to a kind of psychological disorder disease, some patients even accompanied by physical symptoms, such as vertigo, panic, palpitation, loss of appetite, etc., may be related to heredity, personality, social and environmental factors. Agoraphobia as a psychological disorder does not cause cardiac arrest. Sudden cardiac arrest mostly occurs in patients with underlying heart disease, such as myocardial infarction, malignant arrhythmia and so on. Some sudden cardiac arrests may be associated with a sudden shock, severe physical or mental trauma, overexertion, or severe infection. Under the stimulation of stressful events, the body releases a large amount of adrenaline and catecholamines, leading to cardiotoxicity, which seriously affects myocardial contraction disorders and induces malignant arrhythmia and cardiac arrest. Patients with agoraphobia itself is an abnormality of the psyche, not a sudden appearance of a panic, may be afraid of tachycardia, but does not cause ventricular fibrillation and other sudden death arrhythmia. Patients are advised to take psychotherapy and medication to avoid irritating factors, and most patients have a good prognosis.