If a patient with myocarditis is unable to get up, oxygen therapy needs to be given immediately at this time. The patient should be kept in a flat position, stabilized, given a variety of monitoring such as ECG, blood pressure, pulse rate, and arterial oxygen saturation, and given oxygen at the same time. Continuous low-flow oxygen can be given, and the flow and concentration of oxygen can be adjusted appropriately according to the sample of blood gas analysis after the results of blood gas analysis come back. It is important to avoid emotional stimulation and mood swings caused by the patient’s excessive emotional stress, which can trigger unstable blood pressure. The indexes of cardiac enzymology should be checked, the patient should be strictly restricted from performing activities, and a light diet should be given. At this time, drugs to improve myocardial energy metabolism, such as creatine phosphate and coenzyme Q, can be given. Symptomatic support medications, such as hormonal drugs, can also be given according to the patient’s condition.