Levosimendan injection belongs to the cardiotonic drugs, this drug belongs to the calcium sensitizer, which can enhance myocardial contractility and produce positive inotropic effect. Levosimendan injection in the clinic, mainly used for patients with heart failure, usually used for conventional cardiotonic diuretics are not effective patients. However, in patients with heart failure, levosimendan injection has a positive inotropic effect as well as a vasodilatory effect, which can reduce the anterior and posterior loads of the patient’s heart. The common adverse effects of levosimendan injection in clinical practice are headache, hypotension, ventricular tachycardia, insomnia, dizziness, constipation, diarrhea, and vomiting. And for the elderly, pregnancy and breastfeeding and other groups of people with caution, allergic people, patients with severe hepatic and renal impairment, patients with severe hypotension and tachycardia, etc. are prohibited. This product is usually used in hospitals by medical professionals.