Viral myocarditis with enlarged left ventricle can be treated by taking vitamin C, acyclovir, and other medications if in acute stage, or by improving the living condition and taking medications (e.g., metoprolol, etc.) if in chronic stage. Specific analysis is needed. 1. Acute stage: focus on rest, take vitamin C, acyclovir and other medications for symptomatic treatment, and should eat easy to digest and rich in vitamins and protein food. 2. Chronic stage: pay attention to rest, when there is arrhythmia, we can use β-blockers, such as metoprolol for treatment, and when the heart is enlarged, we can use ACEI drugs, such as captopril for treatment. In the course of treatment, it is recommended to eat a low-salt diet and avoid overwork as much as possible to reduce the burden on the heart. If the diagnosis of viral myocarditis is confirmed, it is necessary to consult a doctor in a timely manner, under the guidance of the doctor for early treatment.