Panic can lead to sudden death if it is a malignant arrhythmia, and most often it is combined with dizziness and blackout, which can be a sign of malignant arrhythmia and is more dangerous. Therefore, panic needs timely consultation, fully complete electrocardiogram, dynamic electrocardiogram, to make a preliminary judgment, whether there is an arrhythmia or not. Because some patients present subjectively with psychogenic panic attacks, many tests are performed, a detailed history is taken, and there are no comorbid symptoms. Patients improve the relevant electrocardiogram, cardiac ultrasound examination, if necessary, appropriate pacing, repeated electrocardiographic monitoring, if there is no obvious tachycardia, may be the cause of the problem. The patient removes the cardiac causative factors, the palpitation symptoms will improve significantly, but some patients with palpitation still have dizziness, black eyes, or even fainting and falling in addition to the panic attack. This is a sign of high-risk arrhythmia, and after specialist consultation, ECG, dynamic ECG and cardiac ultrasound should be improved, and even the corresponding electrolyte examination, and other organic diseases should be examined accordingly. Atrial premature beats have a much lower risk of sudden death, while ventricular premature beats are risky if they are multifrequent and have intermittent reversal of ventricular tachycardia, and frequent ventricular premature beats with RonT have a higher risk. In addition, if a patient has panic in combination with organic heart disease, such as a patient with a heart attack, and panic occurs during treatment follow-up, the physician needs to adequately assess whether there is a malignant arrhythmia, ventricular, ventricular tachycardia, scar-related ventricular tachycardia present. So whether or not sudden death occurs with panic, the doctor needs to ask in detail if there are any comorbidities. If the patient has more serious comorbidities, further tests are needed to evaluate whether it is a dangerous arrhythmia. Dangerous acute arrhythmias need to be seen by a specialist and treated accordingly.