High cardiac enzymes may be caused by cardiovascular diseases, such as myocardial infarction, myocarditis, etc. It may also be caused by other diseases such as muscle injury, liver disease, tumors, etc. The harm may occur heart failure, arrhythmia, renal insufficiency, liver insufficiency, malignant disease, etc., and serious cardiac arrests may occur, which may be life-threatening. 1.Cardiovascular diseases: (1) myocardial infarction: myocardial infarction is the most common cause of myocardial injury, the main pathological changes in coronary artery atherosclerosis, blockage of blood vessels, causing ischemic necrosis of the distal myocardium resulting in myocardial injury, if not treated in a timely manner may be arrhythmia, heart failure and other complications, serious may be cardiac rupture, cardiac arrest, and other serious harm. (2) Myocarditis: it is an infectious disease of the heart muscle, which causes damage to the heart muscle due to the pathogenic effect of pathogens and autoimmune factors, and if not treated actively, there may be cardiac enlargement, arrhythmia, heart failure and other hazards. 2.Other diseases: (1) Muscle damage: the specificity of cardiac enzyme examination is poor, and it may also be elevated due to muscle trauma, inflammation and other factors, which may cause a decrease in the ability of limb movement, and if it is a serious condition such as rhabdomyolysis, it may cause renal insufficiency or even renal failure. (2) Liver disease: chronic hepatitis, liver tumor, liver cirrhosis, liver stasis and other liver parenchymal injuries can also cause elevation of cardiac enzymes, which may cause liver insufficiency, and may cause liver failure in severe cases. (3) Tumor: lymphoma, breast tumor, stomach tumor, colon tumor, etc., can cause elevated cardiac enzymes, and if not treated as early as possible, may produce malignant disease, tumor cell metastasis and other hazards. When you find elevated cardiac enzymes, it is recommended to go to the hospital as soon as possible to get a clear diagnosis under the doctor’s guidance and carry out targeted treatment.