Panic is a kind of uncomfortable feeling of heart beating, which can be caused by physiological factors or pathological factors such as cardiac and systemic diseases, and it is recommended to go to the hospital for a clear diagnosis. 1. Physiological factors: strenuous exercise, drinking strong tea, coffee and other stimulating beverages, mental stress, the use of adrenaline, ephedrine, ephedrine, atropine and other drugs may cause panic discomfort. 2. Pathological factors include: ① cardiovascular disease: hypertension, congenital heart disease caused by ventricular hypertrophy, heart failure, arrhythmia such as atrial fibrillation, etc. can have panic attack. ② systemic diseases such as hyperthyroidism, anemia, fever, etc., the body is in a state of high power circulation, may cause panic symptoms. When panic symptoms, can first rule out the physiological factors mentioned above; if repeated panic, it is recommended to consult a doctor as soon as possible for a clear diagnosis and treatment.