Myocarditis is an inflammatory disease of the myocardium, primarily caused by viral infections. Typically, signs of infection such as fever, generalized fatigue, muscle soreness, or gastrointestinal symptoms like nausea and vomiting appear one to three weeks before the onset of myocarditis. Patients may experience palpitations, chest tightness, difficulty breathing, edema, and even fainting or sudden death. Clinically, viral myocarditis is mostly diagnosed due to arrhythmias as the main complaint or primary symptom, and in rare cases, it can lead to fainting or Aschoff's syndrome. For patients with myocarditis, timely examinations like myocardial enzymes, troponins, electrocardiograms, echocardiography, and cardiac MRI are crucial to confirm the diagnosis. Appropriate treatment should be administered to prevent the myocarditis from progressing to cardiac arrest or heart failure.