1, arterial and venous endovascular thrombolysis or vascular reconstruction, to prevent its re-formation of thrombus.

2, to prevent arterial thrombosis, especially heart surgery, to prevent thrombosis of coronary artery bypass.

3. Block acute or chronic disseminated intravascular coagulation.

4, for myocardial infarction, unstable angina anticoagulation.

5, Act as anticoagulation in hemodialysis and extracorporeal circulation.

6, Protection of cerebral nerves. Leeches can reduce the effect of cerebral ischemia on cerebral nerve function, and is an effective drug for the treatment of cerebral ischemic disease in traditional Chinese medicine.

7. Inhibit tumor angiogenesis. Research shows that leech products can play an anti-tumor effect, one of the important mechanisms is to inhibit tumor angiogenesis.