Myocardial infarction is generally not recommended to increase cardiac force with levosimendan injection before intervention. Myocardial infarction may induce cardiac insufficiency when the condition is serious, in which case doing the surgery may be risky and may even induce cardiovascular emergencies. Therefore, for some patients, they may need to take levosimendan orally before having the surgery, which is a kind of drug that can be positive inotropic and can increase myocardial contractility, so that the strength and frequency of myocardial contraction can be elevated. Moreover, levosimendan is also a calcium sensitizer, which can effectively alleviate the clinical symptoms of patients with acute heart failure and return the heart rate to normal, as well as reduce the level of DNA and prevent dopamine butorphyrin produced after the operation, which effectively reduces the postoperative mortality rate. Nausea, constipation, diarrhea, vomiting are common adverse reactions to this drug. This drug is contraindicated in patients who are allergic to this drug, patients with severe liver or kidney impairment, and patients with severe hypotension and tachycardia. If levosimendan is required before intervention for myocardial infarction, it should be taken in strict consultation with a doctor.