Traditional Chinese medicine leech extract product and its application

The present invention discloses a traditional Chinese medicine and their use leech extract, belongs to the field of medicine. Wherein the dual enzyme hydrolysis to leech continuous enzymatic hydrolysis (Leech first with pepsin, and then the suspension under basic hydrolysis conditions to tryptic under acidic conditions), then after ultrafiltration, nanofiltration cation exchange gel purified to give leech extract, which is more than 90% purity, formulation aids can be added by customary methods into lyophilized powder. The present invention has a good effect of promoting blood circulation, for the treatment of cardiovascular and cerebrovascular diseases, especially for the better treatment of ischemic stroke.