If a patient has tachycardia with dyspnea, the first thing to do is to consider the patient’s primary underlying disease, and the best and fastest way to relieve the symptoms is to treat the cause according to the cause. Usually in a sitting position with the legs down. If the patient has an oxygen device at home, such as an oxygen bag or cylinder, the patient can be given oxygen therapy, and a 120 number can be called quickly so that a professional physician can arrive at the patient’s home with a defibrillator. If the patient still has significant respiratory distress, arrive at the hospital as soon as possible for further treatment, accompanied by a professional doctor.