If the cardiac enzymes are only mildly elevated, the child may not experience significant discomfort. If cardiac enzymes are significantly elevated, symptoms such as chest tightness, fatigue, and shortness of breath may occur. If a mild elevation of cardiac enzymes is found in children during cardiac enzyme profiling, it may not be of great clinical significance because some of the cardiac enzymes are slightly higher than in adults, which is normal, and the child may not have any obvious clinical discomfort at this time. If cardiac enzymes are significantly elevated, they may be accompanied by symptoms such as depression, weakness, chest tightness, shortness of breath, chest pain, and gastrointestinal reactions such as nausea and vomiting. After the discovery of elevated cardiac enzymes in children, it is necessary to further improve the cardiac ultrasound, electrocardiogram and other examinations under the guidance of the physician, in addition to combining with the clinical symptoms to clarify the diagnosis and take appropriate treatment. Parents should take their children to the doctor immediately to avoid delaying their condition.