Normal myocardial enzyme test does not necessarily exclude myocarditis, if myocarditis is in the early stage, myocardial enzyme has not begun to rise. 1. Myocarditis can be excluded: myocarditis refers to acute or chronic inflammatory lesions of the myocardium that are limited or diffuse, which often cause elevation of myocardial enzymes. If myocardial enzymes are normal after repeated examinations, the possibility of myocarditis can be excluded for the time being. 2. Can’t exclude myocarditis: if it is mild myocarditis, or in the early stage of myocarditis, the damage area of myocardium is relatively small, and the inflammatory reaction is not particularly serious. Myocardial enzymes may not be significantly increased, or myocardial enzymes in the normal value. At this point, myocarditis cannot be ruled out. If myocarditis is diagnosed, it should be actively treated, and we should pay attention to rest, maintain a good mood, exercise properly to enhance physical fitness, and avoid overwork and mental stress. Specific diagnosis and treatment should follow the doctor’s advice.