Nadroheptadine Calcium Injection is a commonly used intraoperative drug whose main component is low molecular heparin. Since low molecular heparin can eliminate venous thrombosis, Nadroheptadine Calcium is mainly used in venous blood to prevent thrombosis causing high risk conditions. In addition to preventing blood clots, it can also be used in hemodialysis to prevent blood from clotting in extracorporeal circulation and forming blood clots, and its anticoagulant and antithrombotic effects are rapid and sustained, making it a commonly used drug in clinical practice. Since calcium natriuretic heparin is not used alone, the method of use and dosage should be formulated according to the specific situation, and should take into account the differences in individual factors that bring about different use. For patients, once the blood disease, should be timely to the relevant departments for consultation and treatment, so as to control the disease in the first time, to prevent further development of the disease.