Prostadil Injection, inhibits platelet aggregation, thromboxane A2 production, atherosclerotic plaque formation and immune complexes, and dilates peripheral and coronary vessels. Prostadil Injection is exogenous prostaglandin E1, a vasodilator and platelet inhibitor. Prostadil Injection is mainly applied to myocardial infarction, thrombotic vasculitis, occlusive atherosclerosis, etc. It can also be used for the treatment of chronic arterial occlusions, such as thromboembolic vasculitis, chronic ulcers on the limbs due to atherosclerosis, resting pain in the limbs due to microvascular circulatory disorders, and can be used as an antithrombotic treatment after vascular grafting for inhibiting thrombosis in the grafted blood vessels. In addition, Prostadil Injection can also be used in the pre-surgical treatment of pediatric congenital arterial ductus arteriosus to alleviate hypoxemia to maintain the blood flow of the catheter, in order to wait for the time of surgical treatment.