High myocardial enzymes in children are mostly seen in myocarditis and myocardial ischemia, and a few can also occur under physiological factors, such as strenuous activity, and it is recommended that children with high myocardial enzymes be treated accordingly under the guidance of a doctor. Common causes 1, myocarditis: refers to myocardial confined or diffuse inflammatory lesions, mostly caused by viral infections, also caused by allergens, autoantigens, can lead to high myocardial enzymes, generally manifested as weakness, poor nausea, panic, can be accompanied by fever, cough, diarrhea, a few children can be asymptomatic, in severe cases, heart failure, cardiogenic shock or even death; 2, myocardial ischemia: caused by shock, asphyxia, etc. Myocardial ischemia, resulting in cell necrosis, disintegration or increased cell membrane permeability, myocardial enzymes dissolve into the blood and abnormal elevation of myocardial enzymes occurs; 3, physiological factors: children’s myocardial enzymes are generally higher, such as lactate dehydrogenase and hydroxybutyrate dehydrogenase are mildly elevated, which is of little clinical significance. If children exercise strenuously, cry, or become feverish, cardiac enzyme measurements can also appear elevated, and observation is recommended. Treatment is mainly pharmacological, following medical advice, such as using vitamin C and fructose to nourish the myocardium and reduce myocardial oxygen consumption. If the myocardial ischemia is caused by hypoxia, correct the hypoxia, improve the circulation and treat the primary disease. If caused by infection, actively carry out anti-infection treatment, using corresponding antibiotics for bacterial infections and interferon or other antiviral drugs for viral infections. Precautions For children should pay attention to the nutrition of the heart muscle, can be appropriate to eat foods rich in unsaturated fatty acids, such as salmon, walnuts, etc.