The clinical manifestations of immune myocarditis include palpitation, chest pain, dyspnea, edema, fainting, cardiac arrest and other cardiac manifestations, and there may also be extracardiac manifestations such as fever, fatigue, ptosis and weakness of limbs. 1. Cardiac manifestations: the cardiac manifestations of immune myocarditis depend on the extensive degree and location of the lesion; mild cases may have no obvious symptoms; with the aggravation of myocardial injury, some patients may have palpitation, chest pain, dyspnea, edema of the lower limbs and other clinical manifestations, and some patients may also have fainting or even cardiac arrest. 2. Extracardiac manifestations: immune myocarditis may also have fever, fatigue, weakness of limbs and other systemic symptoms, most of the patients combined with systemic immune myositis, may also be accompanied by muscle pain, ptosis, muscle atrophy, muscle weakness and other clinical symptoms. Early symptoms of immune myositis is not obvious, clinical manifestations and viral myositis is more or less the same, so when the symptoms of myositis, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to clarify the diagnosis, and comply with the doctor’s instructions for the correct treatment.