CK-MB, also called creatine kinase isoenzyme, is one of the many types of cardiac enzymes. When analyzing the cause of elevated ck-mb, dynamic comparisons are needed, and it is usually meaningful to exceed two times the normal high value. Of course, it needs to be combined with other clinical indicators, such as troponin, NT-pro-BNP and electrocardiogram. ck-mb elevation represents damage to cardiomyocytes, and common causes include acute myocardial infarction, myocarditis, heart failure, etc. Once the CK-MB is high, anti-viral, myocardial nutrition and cardiac diuretic treatment should be carried out, such as taking drugs such as digoxin, spironolactone, coenzyme Q10, vitamin C. In addition, attention should be paid to adequate rest, low salt, low fat, light diet, less fatty meat and animal offal, and regular review, so as to achieve the purpose of healing.