Pediatric viral myocarditis can occur in children of all ages, from newborns and newborn babies to school-age children, and can occur at all ages, in mild and severe cases, so it is important to prevent viral myocarditis at all ages. Once the virus invades the child’s respiratory and intestinal tracts, it invades the child’s bloodstream, forming a viremia. The virus travels down the bloodstream to the heart, causing degeneration and necrosis of cardiomyocytes, as well as intercellular inflammatory infiltration. In heavy cases, it leads to heart failure, hypotension, cardiogenic shock, the child will experience syncope, clinical symptoms will be chest tightness, breath-holding, weakness, and in heavy cases, fainting, shock, convulsions, and even sudden death and other serious consequences. Therefore, it is very important to prevent colds and viral infections in children of all ages, and parents should take extra care and take good care of them to prevent viral infections. Such children, in the event of fulminant myocarditis, have a high mortality rate and should be seen and treated reasonably and in a regular hospital in a timely manner.