If a heart attack patient’s fever is due to an infection, it is usually not dangerous. If it is caused by an exacerbation of the heart attack, it may be dangerous. 1. Infection: In case of infection, the pathogenic bacteria will secrete toxins and the body’s white blood cells will respond, which in turn will have a direct effect on the thermoregulatory center, resulting in the symptom of fever. In this case, it is recommended to use drugs according to the type of pathogenic source for anti-infection treatment. Common drugs are penicillin, cephalosporins, ribavirin, clotrimazole, isoniazid and so on. 2. Heart attack: When heart attack is aggravated, myocardial cells become necrotic and the necrotic material enters into the bloodstream, which also produces the symptom of fever. This situation is more serious, and may cause life threatening to the patient, so it is necessary to take treatment measures as soon as possible. Generally speaking, nitroglycerin and metoprolol can be used to dilate the coronary arteries and reduce the oxygen consumption of the myocardium, thus alleviating the fever problem. Secondly, aspirin and atorvastatin can also be taken to avoid the formation of blood clots. In addition, if the condition is serious, surgery may be considered, such as percutaneous coronary intervention, emergency coronary bypass grafting, and so on. Fever in heart attack patients is a major health risk, so it is recommended to seek medical attention as soon as possible and follow the instructions of your healthcare provider.